While Lillja was demonstrating the robot's abilities, its circuits fried. He had programmed StockGen Enterprises' entire employee database into its memory as targets, which unfortunately included April. After Donatello had failed to defeat the rogue robot, Angel donned Lillja's exo-suit that he had shown them before, and taken Metalhead out of commission. Metalhead has the Anti-Gravity Gauntlet as his right hand, on his left hand he has a laser cannon, a machine gun and a flame thrower.