This version was designed to be a more .
: Major arcs include the "Notes from the Underground" trilogy and "The Shredder Strikes Back". Teenage Mutant Ninja Turtles Season 1
: Shredder, Krang, Bebop, and Rocksteady are introduced as the primary antagonists operating out of the Technodrome . This version was designed to be a more
: 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
: It features a darker aesthetic with heavy shadows and no pupils in the Turtles' masks.