Sloth is one of the 7 henchman of "The Dollmaker". Sloth doesn't do much, and only moves when his wind-up mechanism is turned. It was once a child with a bad habit of dozing off. The Dollmaker deprived it of it's free will and turned into a toy of evil. Sloth's eyes are an unsightly stream of blood, for the Dollmaker sewed his eyes shut. So he can't see. Yeah.