Top 50 Smartest Cartoon Characters Of All Time

Jimmy Neutron shares many similarities with Dexter, including a passion for scientific discovery and maintaining a sophisticated laboratory. However, Jimmy also understands the importance of balancing work with his personal life outside the lab.

Despite his extraordinary intelligence, Jimmy strives to remain socially active, forming strong friendships and even developing a romance with Cindy. What truly sets him apart from Dexter is his tendency to make fewer common-sense mistakes.

Among Jimmy’s most impressive creations are an anti-aging tonic, a functioning time machine, and his loyal mechanical dog, Goddard.

Dexter, the young protagonist of Dexter's Laboratory, showcases remarkable intelligence far beyond his years. Not only does he build a secret laboratory, but he also finds ingenious ways to fund his scientific pursuits—all while keeping it hidden from his family.

Inside this secretive lab, Dexter puts his genius to the test, engineering powerful inventions like dimensional portals, massive robot mechs, and even a dream machine capable of halting nightmares. His creative breakthroughs highlight his unmatched curiosity and technical expertise.

Yet, like many brilliant minds, Dexter isn't without his flaws. His pride in his groundbreaking inventions sometimes blinds him to his own mistakes, leaving him vulnerable to unexpected mishaps.

Still, it's hard to place all the blame on Dexter. Much of his trouble is caused by his mischievous little sister, Dee Dee, who frequently disrupts his experiments and throws his carefully laid plans into chaos.

"Rick and Morty" stands out as an animated series that tends to resonate more with adult viewers than children due to its bold humor and thought-provoking exploration of life’s complexities.

The show skillfully uses outrageous scenarios and dark comedy to address sensitive real-world issues, adding a unique depth to its storytelling that sets it apart from other cartoons.

The protagonist, Rick Sanchez, draws inspiration from Doc Brown of the classic "Back to the Future" films, blending scientific genius with a flair for eccentricity and reckless adventure.

Although Rick demonstrates genuine concern for his family, his deep skepticism and unconventional behavior often overshadow his compassion. His actions echo the wild and unpredictable nature of Doc Brown.

Throughout the series, Rick showcases his brilliance by inventing advanced gadgets—from combat suits and cloning labs to a powerful, dimension-hopping portal gun. His penchant for adventure is matched only by his frequent indulgence in alcohol.

Chancellor Palpatine from the computer-animated series Star Wars: The Clone Wars stands out as a true mastermind. He single-handedly orchestrated the downfall of the Jedi Order, showcasing his remarkable intelligence and cunning.

Through his carefully concealed schemes, Palpatine brought about the rise of the Sith and took control without ever arousing suspicion. His cunning allowed him to shape galactic events while his true intentions remained hidden from both friends and foes.

Also known as Darth Sidious, his unmatched political and strategic skills propelled him to the role of Supreme Chancellor of the Galactic Republic. Few could rival the depth of his planning and manipulation throughout the series.

Widely considered the most intelligent character in Star Wars: The Clone Wars, Palpatine masterfully used both allies and adversaries to achieve his ambitions. His brilliance lies in turning every situation to his advantage, often before others even realized his game.

Individuals with a tragic past often find the strength to rise as heroes, dedicating their lives to protecting others.

Bruce Wayne is a prime example. After witnessing the traumatic loss of his parents, Wayne commits himself to battling crime, adopting the persona of Batman to safeguard Gotham City from the shadows each night.

While Batman lacks traditional superpowers, his incredible physical abilities, sharp intellect, and advanced technology make him one of the most formidable cartoon characters ever created.

Let’s not forget his exceptional detective skills—he remains unmatched in deduction and relentless in his pursuit of justice.

While numerous family-oriented cartoons dominate today's television landscape, 'Family Guy' stands out for its unique, often irreverent humor—and, ironically, it isn't exactly child-friendly.

The show's sharp writing and memorable cast shine brightest with the introduction of Stewie Griffin, a character whose wit and intelligence are instantly striking.

Though he is still an infant, Stewie's intellect surpasses that of most adults, making him a truly exceptional character.

Armed with inventions like a time machine, laser gun, and teleportation device, Stewie continues to astound both viewers and the show's other characters with his brilliance.

Donatello, recognized by his signature purple headband, is arguably the most inventive member of the legendary Teenage Mutant Ninja Turtles. While his brothers excel in combat, Donatello dedicates himself to creating innovative gadgets and machines that support the team in crucial moments.

His true brilliance lies in his ability to engineer useful devices from virtually anything—even a pile of discarded materials. This resourcefulness firmly establishes him as the team's resident inventor.

As the official weaponeer and problem-solver, Donatello's scientific expertise consistently proves invaluable. His quick thinking and technical skills highlight both his ingenuity and the essential role he plays within the group.

Phineas Flynn stands as one of the two main protagonists of the hit cartoon series Phineas and Ferb. Eternally optimistic, he embraces every day with the goal of making it memorable by pursuing creative and productive adventures. 

Phineas is renowned for his remarkable intelligence, ingenuity, and unwavering determination. He consistently demonstrates the ability to devise inventive ideas and rapidly solve problems.

Resolute in his mission to make summer vacation extraordinary, he refuses to let boredom get in his way. This drive leads him to invent wild and imaginative projects that his brother Ferb Fletcher expertly brings to life.

Mr. Peabody is often introduced as a brilliant yet no-nonsense mentor to young Sherman, combining intellect with a strong sense of guidance.

In his recent animated film appearances, Mr. Peabody’s character further evolves, showcasing his affectionate and even overprotective side as a devoted father figure.

Among cartoon characters, he stands out for his remarkable intelligence. Not only is Mr. Peabody a scientific genius, but he also excels in music, athleticism, and the arts.

Although "Johnny Test" may not enjoy the same level of popularity as some other cartoons today, the series is notable for its two exceptionally intelligent characters.

Johnny's red-haired twin sisters, Susan and Mary, are just 13 years old, yet they consistently display remarkable engineering talents throughout the show. Their inventive skills have captured the interest of a devoted fan base.

Among their impressive creations are a fully functional time machine, a cloning facility, and a device capable of manipulating the human psyche.

Ironically, despite their brilliance, Susan and Mary still struggle to win the attention of their handsome neighbor, Gil.

"Pinky and the Brain" is a delightful spin-off of the beloved and whimsical "Animaniacs" series. The show centers on two talking mice—Pinky and Brain—who regularly hatch elaborate schemes.

Brain, in particular, stands out for his remarkable intelligence and relentless ambition to conquer the world. His motivation stems from the belief that he could govern more effectively than the current world leaders.

Despite Brain's ingenious plans often being sabotaged by Pinky's well-meaning blunders, his dedication to improving humanity is truly admirable. His ability to invent mind-control devices and advanced robots is a testament to his exceptional brilliance.

Velma Dinkley is the brilliant heart of the Scooby-Doo gang, renowned for her logical approach and quick mind. As the team's "brains," she excels at cracking codes, piecing together clues, and unraveling even the most perplexing mysteries with ease.

Her love for solving mysteries is matched only by her competitive spirit, especially when she encounters another intellect that can challenge her abilities. Velma's keen sense of deduction makes her an invaluable asset to the group.

Despite her genius, Velma has her quirks—she is famously prone to losing her glasses and often approaches situations with a healthy dose of skepticism. These traits only add to her depth and relatability.

With her signature sarcasm and sharp wit, Velma never loses sight of what matters most to her: the safety and happiness of her close-knit friends.

Gretchen Priscilla Grundler stands out as the undisputed genius of the Recess squad. Her intellect often surpasses not only her friends but also her knowledgeable teachers and possibly everyone else in her town.

Gretchen takes on a nurturing, big-sister role for T.J. and Gus, and her closest bond within the group is with Spinelli. Their friendship is a cornerstone of the team's dynamic.

Despite her remarkable intelligence, Gretchen sometimes appears naive, especially when she believes fantastical tales spun by her classmates during playground adventures.

Gretchen is frequently accompanied by Galileo, her portable computer equipped with a unique, talking frog mascot, further showcasing her inventive spirit and love for technology.

Dr. Benton C. Quest is the brilliant father of the main character in the classic animated series Jonny Quest. As one of the most pivotal figures in the franchise, his intelligence and expertise are central to the team's adventures.

He serves as a leading scientist for the United States government, contributing his knowledge to both national security and groundbreaking innovation. His drive to explore and discover is matched by his desire to make a positive difference in the world.

Many of Dr. Quest's inventions serve crucial roles in defense and in improving health and well-being for those in need. His commitment to using science for the greater good highlights his character's altruism.

Beyond his professional pursuits, Dr. Quest is a caring and devoted father, always putting his children's well-being at the forefront of his priorities.

Gadget Hackwrench is the inventive and quirky genius from Chip ‘n’ Dale: Rescue Rangers. Always ready with a creative solution, Gadget is beloved for her resourcefulness and quick thinking.

Despite being a small mouse, she excels at making the most out of limited materials, turning everyday objects into ingenious inventions. Her technical expertise drives the team’s adventures and problem-solving efforts.

Fearless and determined, Gadget’s drive to find solutions to overlooked challenges truly sets her apart. She’s a standout character because of her relentless curiosity and dedication to helping her team succeed.

One of her most impressive feats is designing an airplane powered by a toy balloon—an extraordinary machine that actually enables intercontinental travel. Gadget’s creativity cements her place as one of the smartest cartoon characters of all time.

Daria Morgendorffer is the titular protagonist of her own animated series, originating as a supporting character on the hit TV show Beavis and Butt-Head.

As Daria's popularity grew, she earned her own show, where her character undergoes impressive growth and development.

Daria is exceptionally intelligent, and her sharp wit is both captivating and thought-provoking for viewers. Like many highly intelligent individuals, she displays a notable degree of cynicism.

Her signature wry humor can be subtle and isn't always easy to grasp, adding depth to her character. She exemplifies how intelligence can be refined, making her one of the most complex personalities on our list.

Even though her intellect often sets her apart from her peers, Daria embraces this difference and channels it to her advantage, excelling in areas that interest her.

While Daria consistently achieves academic excellence, she rarely participates in extracurricular activities, preferring to stay out of the spotlight.

Although he may be a bit clumsy at times, Dr. Gallio from The Snorks stands out as one of the kindest and undoubtedly the most intelligent of all the snorks.

He deserves recognition not only for his eagerness to help others but also for his dedication to ensuring that all of his inventions function flawlessly.

Like many brilliant minds, Dr. Gallio can sometimes be impatient, yet his reliability remains unquestioned. His ongoing rivalry with Dr. Strangesnork adds an entertaining dynamic to the series.

Bugs Bunny stands as a testament to how clever a bunny can truly be—far surpassing anyone who underestimates him. Famous for his wit and charm, Bugs has become one of animation's most beloved and enduring figures.

He captured the hearts of audiences during the Golden Age of American Animation, quickly cementing his place as a cultural icon. Whether he's facing trouble or having fun, Bugs effortlessly transforms into a masterful trickster.

What sets Bugs apart is his ability to outsmart anyone who dares to challenge him, all while delivering laughs with his impeccable comedic timing. His sharp mind and resourcefulness give him the edge over countless foes and rivals.

With his trademark line, "Eh, what's up, doc?" Bugs Bunny greets both friends and adversaries, reminding everyone why he remains a timeless favorite in the world of cartoons.

Despite his small size, Grey Matter might not seem threatening at first glance. However, this gray-skinned, frog-like alien stands out as one of the most indispensable characters in the hit animated series, Ben 10.

Although Grey Matter lacks physical strength, his exceptional intelligence makes him a powerful asset. Ben regularly relies on him as one of his favorite aliens, especially in difficult situations.

Whenever Ben faces a tough problem, it's often Grey Matter who delivers the solution. His ability to quickly learn new skills and absorb information sets him apart as a truly brilliant character.

Tintin is a renowned reporter, adventurer, and world traveler, showcasing an impressive blend of intelligence, resourcefulness, and independence. Excelling in these demanding roles requires exceptional skill and quick thinking.

He is known for his inquisitive nature and strong moral compass, consistently making ethical choices. As a well-read and determined young adult, Tintin approaches every challenge with commitment and athleticism, always aiming to succeed in his endeavors.

Tintin doesn't take his keen intellect for granted. He is also a proficient driver, adept at operating a wide range of vehicles, demonstrating both adaptability and expertise.

In addition to his adventures, Tintin maintains a healthy lifestyle—he enjoys yoga and is rarely, if ever, seen smoking or drinking, reflecting his disciplined and focused character.

Donald Duck's paternal uncle, Professor Ludwig Von Drake, is one of the most eccentric characters in Walt Disney's Wonderful World of Color.

One can even go on to call him a multi-talented personality. This is because this self-proclaimed genius is not only a lecturer but also a scientist and psychiatrist par excellence.

Needless to say, he does not let go of an opportunity to broadcast his wide range of knowledge about different topics.

That said, one can hear Professor Ludwig Von Drake speaking in his trademark Austrian accent. Also, to do justice to his genius image, he can be seen in an overcoat and specs.

Road Runner, a recurring character in the Looney Tunes franchise, is best recognized by his signature sound, "Beep beep."

While one may associate Road Runner with speed, it is tough to deny the fact that he is exceptionally smart and always a step ahead of his rival Wile E. Coyote.

That said, he is also a fun-loving and cheerful bird who is constantly looking for a happy ending.

Furthermore, Road Runner also comes across as mature. We say so because he understands that Wile E. Coyote trying to get the better of him is nothing more than nature working its course.

Tom and Jerry is a series of outstanding short films created during the golden age of American animation. Being one of the most loved and popular cartoons of all time, it also comprises two of the most liked cartoon characters in animation history, namely Tom and Jerry.

Out of the two, it is the brown house mouse Jerry who is often seen using his wits and courage to outsmart Tom, the cat.

Jerry may come across as cold and careless from time to time, but he wants nothing more than to have fun and live an exciting life.

That said, he can also come across as both cheeky and sweet, depending on the need of the situation.

Blossom is one of the three main protagonists of the blockbuster animated series The Powerpuff Girls. Along with her other two sisters, Bubbles and Buttercup, she has sworn to fight crime and for the freedom of every man, woman, and child in her town.

Although each of the sisters has their strengths, it is Blossom who seems to be in control of the situation more often than not.

She is supposed to be the most mature and level-headed girl in the trio. She even tries to play the peacemaker when the other two end up fighting.

Having said that, Blossom herself can come across as a bit egocentric and overbearing at times. But, then, who doesn't?

This superbly entertaining recurring character in the hit animated television series The Simpsons is the one to truly watch out for.

Even though he may be socially inept, there is no denying the fact that he is a magnificent scientist and nerdy professor.

Doctor Frink tries to put his various inventions to use as he strives to come to the town's aid in times of grave crises.

While he intends to safeguard the interest of the town's residents, his inventions somehow end up making things worse than they usually are.

That said, he is also known for uttering words that seldom make sense when he is overexcited about something.

Gyro Gearloose is an anthropomorphic chicken from the animated television series DuckTales. Even though he is arguably Duckburg's most sought-after inventor, not all his inventions work in the way that he wants them to.

He always manages to come up with new and creative ideas, making him outrageously productive. However, when his creations lack a feature or two, it is Scrooge and Donald are forced to bear the brunt of the same for they are often seen buying stuff from him.

That said, the fact that Gyro is kind to others serves as an added advantage to his smartness.

One of the five founding members of Teen Titans, Cyborg is a technological expert who is half-cybernetic and half-man.

The viewers may catch his half-human side being carefree and cracking jokes but when it comes to his half-cybernetic side, one can't help but admire his wealth of scientific knowledge and mastery over his work.

It is not difficult to guess why Cyborg is a certified genius. He has a background in computer science, physics, robotics, and engineering.

More importantly, he has the acumen to put his knowledge to appropriate use. It wouldn't be an exaggeration to claim that without his efforts, the rest of the Teen Titans would find it difficult to top their enemies.

The next hugely admired cartoon character to make it to our list is Doraemon. Not only is he the smartest character on his show but he is also very caring and helpful towards others.

Having said that, coupling a bit of silliness with his intelligence is what makes him even more interesting to catch on the screen.

This male robotic earless cat has managed to win hearts worldwide with his endearing personality.

There is enough heart and maturity in him to understand the pain of others; especially his dear friend Nobita.

There are polarizing opinions about Nigel 'Numbuh 1' Uno. While some consider him to be a tactical genius, others call him paranoid.

Be that as it may, he is the son of the first KND agent. He leaves no stone unturned to ensure that his missions are accomplished.

Not only that but he also strives to deter Father and other adults from taking full control of the world.

Needless to say, Numbah 1 is a great leader who has the zeal to outsmart some of the smartest secret agents.

It is not surprising then that he was once even a potential candidate to become the Supreme Leader of the KND.

Mojo Jojo is the main villain of the Cartoon Network animated series The Powerpuff Girls. Since the girls are powerful, determined, and smart, it would make no sense for their rival to be dim-witted.

Enter Mojo Jojo; a supervillain who has enhanced intelligence and the will to defeat his foes. He is the only antagonist who has managed to get the better of the formidable girl trio.

Their face-off is one of the most entertaining things to catch in the show. That being said, Mojo Jojo has also used his cunning nature to good effect on rare occasions.

Professor Farnsworth is one of the smartest fictional characters in the much-liked American animated television series Futurama.

He showed grave interest in science ever since he was a teenager and it reflects in his work. He is mainly seen spending a lot of time with his inventions.

What makes his creations different is that several of them are capable of disobeying the known laws of physics.

His greatest strength lies in the fact that he is ridiculously intelligent. However, his intelligence finds an arch-rival in his senility.

Ferb Fletcher is the big executioner of ideas and designs that come from Phineas Flynn. Needless to say, one cannot be on this list without the inclusion of the other.

One of the three siblings of the Flynn-Fletcher household, he can come across as shy at first glance.

However, the reason he does not speak as much is that he does not have a lot to talk about.

What is praiseworthy about Ferb is the fact that he can manage to keep his calm even in the most difficult of situations.

We all need to come together and thank Professor Utonium for having created and taken care of the lovely Powerpuff Girls.

A scientist and inventor par excellence, his conversations with the girls at home are endearing, to say the least.

The Powerpuff Girls and Professor Utonium are excellent at what they do. One cannot help but admire how normal they make the house feel despite their respective genius traits.

Needless to mention, there is a sense of familiarity and ingenuity that come into play when we sit to watch The Powerpuff Girls; thus, making it even more relatable to the viewers.

Princess Bubblegum is a great scientist and inventor and, therefore, the ultimate ruler of the Candy Kingdom. She uses her skills to develop her laboratory and goes on create the Candy People to live in her realm.

However, not all her inventions turn out to be as she originally intended them to be. But, the princess is still capable enough of helping Jake and Finn when they need her support.

Besides, what good is a ruler if they can't back the people who need help?

Skips is one of the most pleasant characters on Regular Show. He may come across as modest when you first catch him on the screen.

A highly unassuming character, he is an immortal who has had the privilege of experiencing much more than what most people experience throughout their lives.

Skips has his share of preaching and wisdom to impart to others and he is often seen helping both Mordecai and Rigby through the course of the show.

The aforementioned traits make him one of the most distinct characters to feature on our list.

Lisa Simpson is the middle child of The Simpsons clan in the hit animated television series The Simpsons.

She happens to be the most accomplished and often the most misunderstood member of the family. Sometimes, her ideas are too intellectual to make sense to her folks.

She is blessed with a high IQ and is undeniably cute. However, while dealing with personal issues at times, she does require adult intervention.

Be that as it may, one cannot deny the fact that Lisa is one of the smartest and most relatable characters in the much-loved animated show.

Joker has to be one of the smartest supervillains of all time. This includes the characters depicted both in the animated television series and in the motion pictures that have been released since the success of the said animated series.

Batman's archrival Joker is as merciless as he is shrewd, and as intelligent as he is manipulative. His wicked tricks might be sound enough to threaten Gotham City.

The many mind games that he plays have gone on to impact Batman both mentally and physically. It is not surprising then that he can exploit his lover Harley Quinn at will as well.

Wrong as Joker may be, he ensures that all of his schemes are executed without fail.

Professor Pat Pending is one of the most intriguing characters in the cartoon series Wacky Races. There is no doubt about the fact that he is genuinely a genius.

We say so because he is credited with developing one of the most remarkable vehicles of all time: the Convert-a-car, which he is seen driving himself.

Also, what's special about this creation by him is the fact that his vehicle is equipped with updated gadgets.

They even help the vehicle transform into just about anything in motion on the road.

Leonardo is a recurring character in the vintage American animated television series The Alvin Show. He happens to be the assistant of a scientist named Clyde Crashcup.

He is a cute-looking, almost bald short man with a football-shaped head. Even though he is an underrated chap, he is often seen whispering ideas in the scientist's ears.

Since his suggestions are mostly great, Clyde Crashcup works on them and ends up taking all the credit for the same.

Also, Leonardo gets displeased with Clyde whenever he is seen questioning his intelligence.

Phineas J. Whoopee from the animated television series Tennessee Tuxedo and his Tales is considered to be "The Man With All The Answers." He is shown to be having a 3D blackboard with the help of which he can educate one on any topic that they would wish to learn of.

He is a polymath in the true sense of the word and is quite knowledgeable. His understanding of topics such as the history of dentistry, hot air balloons, and repairing of television sets is only a reflection of the wide range of subjects that he may have information about.

Dr. Nora Wakeman is an elderly robotics scientist who is credited with the creation of Jenny Wakeman.

Needless to say, she is Jenny's beloved mother and is referred to as such by her and her sisters. There is no denying the fact that this scientist loves her daughter.

But, she is often seen calling her up during the most awkward of situations. Also, Dr. Wakeman is seen having a tough time trying to understand the modern-day slang used by teenagers.

This makes her come across as a stereotypical embarrassing parent from time to time.

Egghead Jr. is quite possibly one of the smartest and among the most underrated characters of Looney Tunes. The studious young lad happens to be a master of physics, applied sciences, and chemistry.

He has a large head and is unquestionably intelligent.

He is often seen with a book in his hands and he does not come across as someone who is loquacious.

That said, Egghead Jr. is seen making an appearance in several shorts with Foghorn Leghorn. Since Looney Tunes is a show that encompasses a lot many popular characters, it is possible that a lot many of us cease to remember Egghead Jr.

Linus van Pelt from the animated American series The Charlie Brown and Snoopy Show is a well-intentioned character. The middle child of the Van Pelt family, he does not harbor ill intentions in his heart and is always looking forward to solving as many problems as he can.

Even though he can come across as a bit naive, he is often belittled by his little sister Lucy. That said, we would also like to mention that Linus van Pelt is Charlie Brown's best friend and someone who is in love with his teacher.

Tracy the Gorilla from the popular animated series Ghostbusters is a genius gorilla who looks for ways to get the Ghostbusters out of a tricky situation.

Even though he can't speak, he can convey what he thinks or feels by drawing sketches or through a game of charades.

Tracy the Gorilla is also credited with creating some of the team's newest anti-ghost gadgets. Since he is a gorilla, he is incredibly powerful and does not shy away from showing his strength from time to time; like once when he threw the Statue of Liberty into the ocean.

Spider-Man: The Animated Series focuses on Spider-Man and his alter ego, Peter Parker, who is one of the smartest animated characters to make it to our story.

Spider-Man's public image takes a beating every now and then, but his efforts to save the people of his city and fight crime using his bravery and intelligence can never be ignored.

This is precisely what makes him one of the greatest superheroes on planet Earth. Spider-Man's alternate personality, Peter Parker, is also someone who is shown to be somewhat nerdy.

He looks up to his Uncle Ben who taught him to fight for everything right. He even tries to get a better understanding of science courtesy of a genius scientist named Otto Octavius.

Ben Tennyson was an ordinary ten-year-old boy until he stumbled upon the Omnitrix.

Omnitrix is a potent watch-like device that enabled Ben to turn into ten different aliens at will. This is something that turned him into a hero of sorts to people around him.

Even though he can risk coming across as cocky and arrogant at times, one cannot deny the fact that he has an inherent desire to help people.

While Ben may not be great at his studies, he is forgiving and compassionate in nature.

From the obscure cartoon Galaxy High comes our next high and mighty character Aimee Brightower. The thing with smart students is that even though they are popular among the teachers, they are deemed to be nerds by other students in the classroom.

The case does not seem to be very different for the ambitious Aimee. Nevertheless, she is able to earn both a scholarship and a space car courtesy of her good grades.

Having said that, it has also been shown that she might have a crush on Doyle. However, they are not exactly shown ending up like a couple.

Iron Man from the animated television series Iron Man: The Animated Series has to feature on our list of the smartest cartoon/animated characters of all time.

Even though Tony Stark may not have a lot of powers of his own, the Iron Man Armor ends up bringing his strong side to the fore to get things done efficiently.

The business magnate has been seen working on a molecular expander to increase the food supply. He oversees a company that deals with advanced weapon and defense technologies.

Also, he is known to be both a competent scientist and a charming playboy, depending on what the situation demands of him.

Dr. Heinz happened to have a terrible childhood and was seen as a disappointment by everyone around him. Since he was always treated like an outcast, it gave him an excuse to turn to the dark side.

In Phineas and Ferb, the mad scientist is seen inventing new gadgets, even if some of them end up providing great inconvenience to the people in his vicinity. 

He resides with his beloved daughter in a high-rise building in the middle of the Tri-State Area, Doofenshmirtz Evil Inc. Most of his sinister plans are materialised here itself.

The tenacious doc never backs down even if one of his plans happens to fail. Instead, he takes time to come up with new ones. Indeed, he is as ambitious and manipulative as they come.

Sandy Cheeks quite literally lives in a big air bubble at the bottom of the sea. A Texan at heart, she is a former astronaut who decided to let go of her space life to head into the ocean.

One of the things that fascinates this scientist is the sea creatures in Bikini Bottom, which is perhaps why she ends up conducting experiments on them.

While her experiments certainly help her comprehend their unique lifestyle, it also only adds to her already vast knowledge.

Even if we feel that SpongeBob may have a crush on her, she is too busy with her inventions and explorations.

Be that as it may, one has to acknowledge her willpower for she never gives up and knows how to withstand a cumbersome situation.