: Major arcs include the "Notes from the Underground" trilogy and "The Shredder Strikes Back".
: The season concludes with the Turtles infiltrating the TCRI building , discovering their origin's link to the Utrom aliens, and Splinter mysteriously disappearing. 2012 Animated Series (Nickelodeon) Teenage Mutant Ninja Turtles Season 1
: Critics from Rotten Tomatoes note it as "hip, playful and witty," though it is famously more comedic and campy than the original Mirage comics. 2003 Animated Series (4Kids) : Major arcs include the "Notes from the
The first season of (TMNT) varies significantly depending on which era of the franchise you are interested in. Across its history, Season 1 serves as the foundational introduction to the four brothers—Leonardo, Raphael, Donatello, and Michelangelo—and their mentor, Splinter. 1987 Original Animated Series 2003 Animated Series (4Kids) The first season of
: The season finale, "Showdown," features a massive battle against the Kraang and Shredder, revealing that Shredder's daughter, Karai, is actually Splinter's lost daughter . Recent Reboots
This season transitioned the franchise into with a heavy focus on character growth and humor.