Professor Destructicon

Professor Destructicon, known by his friends as "Kevin" was Dr. Heinz Doofenshmirtz's mentor a long time ago.

Despite being Doofenshirtz's mentor, he was an even more incompetent villain than his student. Before he was arrested (Why he was even arrested is unknown), he attempted to complete his grand scheme of setting fire to the sun, which would have absolutely no consequense. When he asked Heinz to complete his grand scheme, Heinz actually showed more common sense telling him that the sun was a big ball of fire and to let it go. He then asks Heinz to blow up his headquarters which is foiled by Perry the Platypus.