They apparently have a reputation for repeatedly escaping from police custody, only to be caught by Chaotix. After one such escape, Mighty the Armadillo and Espio the Chameleon took down one of the Zombie Brothers then asked him to settle an argument by saying which one of them had hit him hardest. The Brother in question was so groggy he only managed to mumble "Eng-hunnn?", but Espio nevertheless claimed that he'd won.