This doesn't happen much any more! A first-entry for an older series! Joy Mech Fight is an obscure, Japan only fighter on the Famicom from 1993. It's a fun little game, with some brilliant robot designs. If you root through my gallery, you'll find a few drawings of Sukapon - the stand-up comedy robot and main character.
Anyway! Ghoston is one of your many opponents, and he's got this whole skull thing going on. I figured it was about time he joined the ranks!
The whole story is basically stolen from Mega Man. Two scientists make robots. One scientist goes mad, steals robots and tries to take over the world. Other scientist reprograms the only remaining robot into a fighting machine.