He used to be assistant to Rex's true parents, Dr. Ancient and Dr. Cretacia, until he betrayed him by helping Dr. Z take control of the Time Ship, (Zeta Point). From then on, he worked with Dr. Z in repairing Zeta Point until it was fully functional. However, in the meantime, he was really planning to take over the island and force dinosaurs into an extreme evolution so they could withstand the meteor from the Cretaceous Period that had wiped out the dinosaurs, as he said in Metal Imbalance. He attacks the D-Team and the Alpha Gang with Black Tyrannosaurus, but the two groups work together to defeat it and he is sucked into the past.