Dr. Robotnik

"Ha-ha-hah! Citizens of earth, lend me your ears and listen to me very carefully: my name is Dr. Eggman, the world's greatest scientist and soon to be the world's greatest ruler. Now witness the beginning of the greatest empire of all time!"

- Dr. Eggman, Sonic Adventure 2

Dr. Ivo Robotnik better known by the alias Dr. Eggman is the main antagonist of the Sonic the Hedgehog series. He's a human scientist with an IQ of 300 and dreams of dominating the world, but his constant plots to create his Eggman Empire (a.k.a. Eggmanland) are always thwarted by Sonic and his friends.

Why He's The Greatest Scientific Genius In The World

 * 1) He is one of the most famous and popular villains in video game history.
 * 2) Eggman's many incarnations treat him in very different forms of his character, ranging from very threatening to very goofy & comedic.
 * 3) *At his most threatening, he provides a scale from the villain who fits the bill such as his Sonic Satam 1993 counterpart, and at his goofiest, he is the most hilariously entertaining throughout the whole Sonic series, his extremely memorable AOSTH counterpart paired with his henchmen for example.
 * 4) He's a perfect opponent to Sonic, being the contrary of nearly everything the blue blur stands up to.
 * 5) In his canon appearances, he is such a riot, just enough to be hands down, the most lovable character in the Sonic series in it's entirety.
 * 6) He makes every battle he has with his enemies count.
 * 7) Despite his desire to be a dictating emperor who rules with an iron fist over an entire nation made of nothing more than machines, he can be a gentleman, a wealthy philanthropist, what have you. TL, DR: a man who can be so captivating to the point of fooling others into doing what he wants.
 * 8) While most villains or anti-heroes in the Sonic series can be interesting and/or memorable (such as Metal Sonic, Merlina and Mephiles), they're usually not as well-developed as Robotnik, was he became so important to the franchise that Sega just can't replace him (not forever, at least).
 * 9) He's so desired and important to the series that putting someone else in his place may be a crime if not executed correctly.
 * 10) He's been in more games than the titular Sonic himself, Dr. Robotnik's Mean Bean Machine (1993) for example.
 * 11) He has such funny and unforgettable phrases like "Snooping as usual, I see?", "Get a load of this!" and the most recent "OOOOOOOOOOOOH, GIVE ME A BIG! FAT! BREAK!"
 * 12) One of Eggman's more admirable, if not dangerous, traits is his courage throughout life-threatening situations. Despite his continuous use of machinery to protect himself and fight his opponents, Eggman shows considerable bravery and rarely shows fear, regardless of who or what he is facing.
 * 13) His trademark narcissism made him one of the most iconic foes in gaming.
 * 14) He's so intelligent that he can build any kind of machine, from Badniks to a giant Death Star copy with his face on it.
 * 15) It's unanimously agreed that he's pushed to eleven in mh:awesomegames:Sonic Adventure 2, where he, for example (but not limited to), holds Amy hostage at gunpoint and quickly sees through Tails' plan to replace one of the Chaos Emeralds with a fake replica.

Bad Qualities

 * 1) Despite his high intelligence, Eggman is rather immature and childish, like throwing temper tantrums when Sonic manages to wreck into his plans, though it is mostly played for laughs. He often has his own brand of setbacks because of the many goofs that would go into his plans.
 * 2) *An example of his immaturity is in the ending of Sonic Unleashed, when Orbot begins to insult him over his constant failures and calls him a loser; Eggman screams "Oh, shut up!!", attempts to kick him only to comically fail, and then chases him through the desert while making agitated noises and violently flailing his arms in an attempt to grab him.
 * 3) His design from Sonic '06 is poorly made and uncanny.
 * 4) * Speaking of which; even for Eggman standards, this is one of the worst incarnations of the evil genius himself. Where his personality was watered down into being a straightforward and predictably (if stupidly at times) fallible antagonist because of being played as a "serious" character because of the story, with little to nothing being exactly enjoyable or notable to say about him. Where his seriousness made Eggman rather boring, unremarkable, and generic than you'd expect of his comedic and villainous charm.
 * 5) His goals can be a little inconsistent: While he usually tries to dominate the world, he sometimes just wants to build an amusement park or take over a city. Heck, he even tried to conquer the entire freaking universe once!

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Trivia

 * In the live-action/CGI big-screen adaptation of Sonic the Hedgehog (2020), Eggman is portrayed by lovable comedian and actor, Jim Carrey.
 * Carrey's portrayal has been indefinitely praised by the fanbase, even being called the "saving grace" of the film, before the redesign of the main character, of course.