Species Gender Height Allies Enemies First appearance Last appearance Voiced by The Robo-Thugs (or Robot Thugs as the leader of the Gangsters refers to them) are robot assassins sent to eliminate the gangsters in episode "Jack and the Gangsters." The Robo-Thugs are dressed in mafia suits wielding "Tommy guns" (Thompson sub-machine guns). One model has flamethrowers on its arms instead of the Tommy gun.