Boss Cass is the main antagonist of the Ty the tasmanian Tiger seires. He is an evil Cassowary who often tries to do something that will give him world domination. In the first game, he wants to steal The Sacred Talismans and fails to do so at first, as Ty's dad releases them right before he was imprisoned) and is quickly defeated by Ty. In the second game, he builds his own city, where he can keep track of Ty, but is still defeated. He attempts to kill Ty at the end of the third game, but still fails to do so.