Obsessed with extending his lifespan, the mad scientist now known only as Doctor Brain slowly replaced his own living tissue bit by bit with his cybernetic enhancements. He is more machine now than man, the only living tissue left on his body being his brain and his hands. Well, not HIS hands- those wore out long ago- but for all his insistence that his machine parts are superior, the Doctor is loathe to give up the tactile sensations his fleshy hands give him, something he has proven incapable of replicating in cybernetics. Having deprived himself of his other senses- he "sees" the world through sonar and radar data, "smells" by being able to catalog the minutest trace of anything in the air his processor takes in- he is pathological about touching everything he can. Things he's never touched before are a frequent target for his theft, and more than once he's kidnapped a heroine or damsel just to stroke her hair creepily until she manages to escape or is rescued. He's also never gotten over the loss of his original hands, which he took enormous professional pride in as a surgeon, so he's been known to kidnap other surgeons, famous rock guitarists, sculptors, card magicians, and other people he perceives as especially dextrous in order to find a suitable replacement once and for all. None ever measure up once installed, however.