Not Teenaged, Mutant, or Turtle.

At the end of Enter the Ninja, the Big Bad is defeated by a well placed throwing star to the chest, which causes him, in his final moments, to wonder why he had embarked on a life of evil in the first place:



But in the second film, Revenge of the Ninja, it appears that evil is not defeated after all, and the protagonist of the first film loses his entire family in a senseless massacre:



And in the third film, Ninja III: The Domination, being presented ONE NIGHT ONLY this Thursday as part of It Came From the Neo-Futurarium VII: Revenge of the Neo-Futurarium, an aerobics instructor in early 1980s Phoenix is possessed by the vengeful spirit of an evil ninja assassin.

We're not sure it has anything to do with the other two, either.

Slammin' 80s synth-pop and martial arts action, all rolled into a poisonous rice ball of doom! Ninja III: The Domination!