Captain Zorax was the leader of the Triceraton invasion squad in "Night of the Dark Turtle". As the captain of a small invasion fleet, Zorax invaded Earth, claiming it as part of the Triceraton Empire and planned to send it through their stargate towards their homeworlds and strip it clean.

Leonardo fought him only to be defeated. However, Zorax's plan was thwarted, when Donatello was able to convince Zorax that he was ruler of the Earth and the animatronic dinosaurs from the Natural History Mu