I took the rough sketches of the wardens body shapes and used it to flesh out some armour designs as I wanted the corporation that ran the prison to have dealings in other shady business and to be affectedly a private military force.
After discussing ideas with the group a number of problems were brought up about having an all alien cast might muddle the differentiation between the guards and the prisoners.
I also felt that this idea was not working and wanted to take it in a new direction by re designing the head warden as a human and fleshing out the story.