Doctor Ivo Robotnik is the main antagonist of Adventures of Sonic the Hedgehog. He is a comically obese scientist with an IQ of 300. He looks like a early version of Dr. Eggman, but with a much larger, much more ragged orange mustache, a conical head, a drooping pink nose, black eyes with red irises and black pupils, a rotund body and wiry legs. He wears a red and yellow bodysuit, black skintight shorts, and a pair of metal gauntlets.
A pompous and short tempered despot, his only goal was to rule Planet Mobius. At least once per episode, Robotnik declares his hatred of Sonic with his unmistakable catchphrase, "I HATE THAT HEDGEHOG!" Dr. Robotnik also got help from the one, the only, salesman: Wes Weasely.
Frustrated with Sonic's daily interferences, Dr. Robotnik formed the S.S.S.S.S.S (Super Special Sonic Search and Smash Squad) in an attempt to thwart him once and for all. When the S.S.S.S.S.S. proved ultimately to be incompetent, Robotnik constructed Scratch and Grounder.
Robotnik is shown through the series to be a sinister and sadistic man, enjoying the pain and suffering of the planet. His plans often involve either the destruction of Sonic, or the destruction of an entire city while Sonic is incapacitated. He is the brain behind the majority of the plots in the show, and is exceptionally vain in both his ideas and appearance. Robotnik is often the one to spot Sonic's disguises, although he gets fooled as well. The majority of his traps fail due to either his execution, the machine itself failing, or Scratch and Grounder botching the plan. In the series he has two known relatives, and one built himself. Dr. Warpnik, his loony cousin, was banished to the 'Warp of Confusion' for being insane. Mama Robotnik, his mother, recurs several times, and shows to be the only force Robotnik respects and fears. Robotnik Jr, the son he built himself to carry on his legacy, switched sides to Sonic when he realized his father was crazy. He also makes an alliance at one point with Professor Quark, a rival mad genius who also wants to destroy Mobius, however the alliance is short lived as neither can agree on who is to blame when things go wrong. Captain Memo also makes an alliance with Robotnik at one point after a violent misunderstanding due to Sonic, however Robotnik abandons him to the mercy of the Merhogs when the plans go sour.
- Though he bears resemblance to Dr. Eggman in Sonic the Hedgehog (16-bit), his mustache is much larger and much more ragged, his head is conical, his nose is pink and more drooping, his eyes are black and his legs are slightly bulkier.
- This was the only English-speaking series prior to Sonic X to have him referred to as "Eggman" in one episode by Tails, though it was only to keep up the trend of egg-related insults used by both Sonic and Tails throughout the series.
"You dopey Duncebots! Can't you do anything right? Now I'll have to do my own dirty work and blend those beans."
Adventures of Sonic the Hedgehog:
"I HATE THAT HEDGEHOG!!"
"Goo-goo poo-poo to you, too!"
(as a baby, curtesy of those two duncebots Scratch and Grounder) "Robotnik don't like play; like break things, like squash things--LIKE YOU!" (referring to baby Sonic and baby Tails)
"Ooh, Robotnik really mad now! Me hate cream pie!"
"Chocolate not bad, but me still gonna get you!"
"DRAT! DOUBLE DRAT!"
"Yuck, only black and green jelly beans left!"
"The red button, you monkey wrench!"
"YOU STUPID CRETINS! LOOK WHAT YOU...*turning into a baby*...did to Robotnik. Me very mad now. Very mad."
"Me mad. Me very...*turning into an adult*...VERY, INCREDIBLY, INDESCRIBABLY ANGRY WITH YOU TWO IDIOTS!"
"Happiness is so much more enjoyable when it's based on the misery of millions."
"You lame brained, knuckle-dragging dork! How dare you interrupt me when I'm having a bath with my rubber crocodile?!"
"I guess I'll have to give myself a promotion!"
"Snooping as usual, I see."
Robotnik has become a popular character online, spawning several fads, the most prominent being the use of "PINGAS" in mashup videos. The "PINGAS" fad came from the line "Snooping as usual I see." This first appeared in a YouTube video entitled This Video Contains Win, in which the "ping" and "as" were mashed together, making it sound as if Robotnik was saying the word "penis" repeatedly, to the beat of Gourmet Race from the Kirby Franchise. The video and the joke have been remade and parodied numerous times.
The fad has also been referenced by Mike Pollock, the current voice of Doctor Eggman, who recited the full line in an interviewTemplate:Which, along with "I HATE THAT HEDGEHOG!" It also appeared in issue #205 of the Sonic the Hedgehog by Archie Comics, in which a deranged Doctor Eggman asks Snively if he is "snooping as usual".