Dr. Robotnik (AOSTH)

Doctor Ivo Robotnik Sr. is a crossover character of the Happy Tree Friends Fanon, and the main antagonist of the Hedgehog Sonic the Hedgehog. He is a comically-obese scientist. A pompous, bad-tempered and cruel despot, his only goal is to rule Happy Tree Town and the planet Mobius and destroy his archenemy, Sonic. At least once per episode, Robotnik declares his hatred of Sonic with his unmistakable catchphrase, "I hate that hedgehog!". His only fear is his mother, Mama Robotnik.