Teen Titans S01 E01 Final Exam

"When there's trouble, you know who to call."

Three new graduates from the H.I.V.E. Academy, Gizmo, Jinx, and Mammoth, are hired by Slade to ambush the Titans. The Titans try to stop them, but Robin is lost during the fight and Titans Tower is taken over by the H.I.V.E. students.