In season eight, Bebop and Rocksteady seemed to have some form of intelligence, and talked and joked around less. Rocksteady and Bebop's last appearance is in the season 8 finale Turtle Trek. In that episode, the Turtles destroy the Technodrome's engines, trapping it and its inhabitants in Dimension X for good. While their bosses Krang and Shredder returned in the 10th and final season, Bebop and Rocksteady did not. Their ultimate fate was not explained, although it is assumed that they are still somewhere in Dimension X.