Wikipedia
Deadblow
Deadblow is a combat robot built and driven by Grant Imahara. It competed in BattleBots in the middleweight division using a fast pneumatic hammer as its weapon. Deadblow won 2 rumbles and was ranked number 2 among middleweights, right after Hazard. Afterwards, it went on with Grant to help in some experiments in the television series MythBusters and is now regarded as a permanent member of the Build Team.