Reading that has given me a brilliant idea. Forget the SuperMax security prison ..... I give you BearMax Prison.
Build a prison, 4 walls, square. Dig a 30' wide 20' deep dry moat around it. Fill the moat with Bears. You see, no need for guards anymore, if a prisoner escapes the bears will get them.
Gello should be happy as the bears will now be confined to moats and no longer allowed to run in the wild.