Fake Igor is one of those guys who's obsessed with rehabilitation, he can't shut up about this and the game. If you look at him close enough you might be able to see he's not the real Igor... Some time ago he tried to take over the world but died instead.
How the burned bread killed him
Mario was making some toasted toast, Fake Igor saw Mario toasting toast in he asked for some. When eating 2 slices he realized he was eating burnt bread; remembering all of the Persona 3 memes—Fake Igor died of a sudden aneurysm.
List of people Igor has tried to rehabilitate but failed(In order)