Allen was a Dead Scorpion and served as a prison warden.
Allen, prison warden's diary: The USM prisoners were brought in today. One of them has been taken to the pit; we'll start bringing them one after another until they've all faced the arena. All except for the hurt one. Drago wants him to bleed to death in the cell. I'll probably toss another Nali into the pit as well, and maybe that cyborg too. We removed his rockets but the machinegun fused to his arm couldn't be taken off. He knows we'll kill him with the automatic EMP discharge if he tries to fight his way out so he just sits in there. They took Jonas a few hours ago. I hope he makes it through the pit. I always liked Jonas.