Teenage Mutant Ninja Turtles, Season 3

April:
Bishop, why do the Triceratons hate the Kraang?

Bishop:
For millennia, the two species have fought over Dimension X. The Kraang use intelligence to battle their foe while the Triceratons rely on brute strength and cunning. It seemed the Triceratons would win, but the Kraang used the most powerful weapon in the universe, a black-hole generator that wiped out the Triceratons entire planet. Only a single Triceraton fleet survived. They vowed vengeance. The battle may have won, but the war has not. It still rages across Dimension X. Now shall we begin?