A mad scientist is a scientist whose theories and ambitions go beyond the accepted norms of conventional thinking. Invariably, such an individual belies an obsessiveness that not only endangers his or her own physical and mental health, but those of others as well. With a mad scientist, only the work is a priority in life. Everything else is secondary. A mad scientist is not above violating the laws of society as well as certain accepted ethical codes in order to achieve his means. This could range from everything such as creating a screw-top skullcap to robbing dead bodies from cemeteries in order to stitch together a lumbering monster with bolts in his neck. Then of course, there's that squirrely little guy from Miskatonic University who used his patented Re-agent to reanimate the dead. Yeah... he was a nutso.