John Kramer

or '(the) Jigsaw (Killer)'

Saw
Though he is seen lying on the bathroom floor during most of the film. He is also seen lying on the hospital bed when Lawrence Gordon is called to his office, as well as in his lair when he speaks to Jeff Ridenhour and is confronted by David Tapp and Steven Sing. At the end of the film, he gets up off the floor and pulls off part of the prosthetic he was wearing, informs Adam that "the key to [his] chain, is in the bathtub." Then proceeds to walk out of the bathroom, turning off the light and saying the iconic line "Game Over" as he shuts the door, leaving Adam to rot.