I am finally able to show you pictures of their TF forms. They transform into the monsters you see next to them. I put the colors of their shirts in case you don't already know who is who.

Once they are in these crazed forms, they are of a different mind and cannot control what they do.

Paul (blue shirt) = Detheseus (giant blue saber-toothed monkey-bear)

Max (black jacket) = Killius (giant brown wolf-dog)

Peter (yellow/blue shirt)= Frenzieus (giant lanky mutt)

Mike (brown shirt) = Viletor (street-fighting macho version of himself. he is possessed)

Georgio (orange/green shirt) = Wrathaeus (micro green dragon with feathered wings)