Teenage Mutant Ninja Turtles (2003) (2003)

Episode Overview

The Final Showdown introduces a powerful warrior from distant galaxies known as The Ultimate Ninja, who arrives with the intent of defeating Shredder. However, upon arrival, he discovers that Leonardo has already vanquished the villain. Fueled by ambition, The Ultimate Ninja then confronts Leonardo, demanding a deadly duel to prove who truly deserves the title of the ultimate fighter.