Driller Killer is extremely disorganized, both as a killer and in his living space, he is shown to be ruthlessly adept at what he does, apparently living solely to terrify, torture and kill, for no discernible reason or motive. He also seems to have the mind of a 3 year old, shown by having toys and how he seems to be incapable of human speech, which can stem from having a possibly neglectful childhood.