Description:  The Teenage Mutant Ninja Turtles cartoon series follows four mutant turtle brothers—Leonardo, Donatello, Raphael, and Michelangelo—who, trained in ninjutsu by their sensei, Master Splinter, protect New York City from evil. The turtles battle threats like the evil Shredder and his ninja Foot Clan, while also dealing with a range of other villains, from aliens to mad scientists. Various versions of the series exist, from the original 1987 show to more recent interpretations, but they all share the core concept of these anthropomorphic turtles as crime-fighting heroes.

Core concept: Four mutated turtles—Leonardo, Donatello, Raphael, and Michelangelo—are trained in ninjutsu by their mutated rat sensei, Master Splinter.

Main antagonists: Their primary foe is the evil Shredder, along with his ninja Foot Clan and the alien Krang.

Plot: The turtles defend New York City from their sewer lair, and their adventures often involve other threats, including aliens, robotic droids, and mad scientists.

Variations: While the core premise is consistent, different cartoon series have introduced variations to the storyline and character designs. For example, some versions explore the mystery of their mutation more deeply, while others focus on high school life, and newer iterations have updated character designs and powers, such as in Rise of the Teenage Mutant Ninja Turtles.