Zanzoar wished to become the new Emperor of the Halcyon Knights, and fought veciously to claim the throne. After the Flame of Azeroth was accidentally destroyed by Megas, the emperor issued a challenge to the robots who were competing to claim his throne: bring him the robot who destroyed the flame to face judgement. He chased after the group until they could run no longer, defeated Coop and brought Megas back first and was named emperor. He tried to execute Megas for destroying the flame, but Coop broke free and destroyed Zanzoar.
- Zanzoar's appearance is a hybrid of Go Nagai's two characters, Mazinger Z and Great Mazinger. Its name mostly like derives from the American adaptation, titled Tranzor Z.