See, thing is, Butch's really not an evil person. Sure, he has a particular interest in brain tissue, experimental biology, and unborn foetuses put on formaldehyde -- but other than that, he's a regular Joe. It's that lense flare coming off of his glass right eye. They used to make fun of it in high school. He used to hate it, but he's learned to live with it -- better yet: use it to his advantage.