The Big Trilogy is a popular title given to the three final season 3 episodes of the 1987–1996 animated series.



Technodrome after entering Dimension X.

The episodes are centered of the Technodrome being located near the core of the Earth. By tricking the turtles, Krang, Shredder, Bebop and Rocksteady manage to repower the Technodrome and bring it to the Earth's surface. Opening a portal, Krang tries to send the Earth to Dimension X, but instead the turtles and Splinter fight their opponents, and send the Technodrome back to Dimension X.