* Shredder vs. Splinter. All the way.
-->'''Splinter:''' [[BadassBoast I have defeated you everywhere, Shredder! I can defeat you ''nowhere'' as well!]]
* The Turtles trapping [[BigBadDuumvirate Shredder and Krang]] in Dimension X for good in "Turtle Trek", and later doing the same to [[KnightOfCerebus Lord Dregg]] in "[[GrandFinale Divide and Conquer]]".
* Irma [[TookALevelInBadass taking a level in badass]] in "Shredder Trimuphant!".
* Shredder defeating two gangsters at the beginning of "Return of the Shredder!" Considering this happened around the time of his ''massive'' VillainDecay it definitely counts.