Teenage Mutant Ninja Turtles (2012)- Season 4 -

: After being gravely injured, Shredder uses an unstable "Super Mutagen" to transform into the monstrous Super Shredder . The Climax: "Requiem" and "Owari"

: This arc features a new intro, space suits, and intergalactic enemies like Lord Dregg . It concludes with the "Earth's Last Stand" finale, where the timeline is repaired through the Fugitoid's ultimate sacrifice. Part 2: "City at War" and the Rise of Super Shredder Teenage Mutant Ninja Turtles (2012)- Season 4

: They must stop the Triceratons from assembling the three pieces of a black hole generator that originally destroyed their world. : After being gravely injured, Shredder uses an

: April graduates to a full kunoichi under Master Splinter's tutelage, though her psychic abilities become increasingly volatile due to a fragment of a space gem. Part 2: "City at War" and the Rise

Critics and fans generally praise the season for its willingness to explore , specifically the permanent death of major characters and the introduction of "Super Shredder" as a formidable, near-unstoppable threat.