Who kills Prince Humperdinck at the end? Someone's got to do it. Is it Inigo? Who?
~ The Grandson
Nobody. Nobody kills him. He lives.
~ The Grandfather
Villains that are still alive and active as of their last known appearance. Note that this does not necessarily mean that a villain is a Karma Houdini if they are still adequately punished for their actions, though all Karma Houdinis are living villains, unless they have died by natural causes.