Otis is a genetically-enhanced fighter created by Orion. Just like Mira and Nixon before him, Otis was one of many people who were abducted and subject to various experiments by Orion, turning him into his current state, that of a humongous killing machine with a mind full of nothing but destruction, albeit one with a very faint memory of his past, as he is seemingly able to recognize the faces of Mira and Nixon, but could never remember where or when they first met each other. Under orders by Orion, Otis enters the Sentoki tournament to destroy, if not kill all the other participants.