Thylo was the leader of a coven of marsupial werewolves who lived in the Australian Outback. An aloof and often times mean-spirited man, he chose his mates on a whim, whether they desired him or not. His stepdaughter, Jerboa, fled from his amorous advances and sought shelter in the streets of Sydney. Thylo was soon captured and interrogated by a scientist named Professor Harry Beckmeyer. During the interrogation, Beckmeyer used hypnosis and strobe lights, which caused Thylo to Frenzy. Thylo escaped captivity along with another reluctant mate, Olga Gorki, and returned to their commune. He later invoked the phantom spirit of his werewolf forbearers in an effort to combat a squad of soldiers who were attempting to eradicate them. The invocation allowed him to transform into a giant werewolf. Thylo was killed when a soldier fired a Bazooka shell into his face at point blank range.