Villains who win against the hero and/or are successful in their ultimate goals (ie. Audrey II taking over the world with its children in the original ending of Little Shop of Horrors, and Helmut Zemo tearing apart the Avengers to avenge his family's demise caused by one of the Avengers' battles).

It should be noted that, for some, the goal wasn't to kill the main protagonist. Notably, successful villains are very common in many modern-day horror movies (e.g. Freddy Krueger, Jason Voorhees, Godzilla, Kayako Saeki, etc) as well as some tragic fictional works (e.g. Padre Damaso, Iago, etc) in which many of these villains succeeded in killing the protagonist in the end. Sometimes, a successful villain can be a Protagonist since protagonists are known for winning in the end.

Though these two categories can overlap, this is not to be confused with Karma Houdini, as this villain, despite his/her success, can still be defeated later, usually at the end of the story if his/her success occurred at the beginning or middle of it, or in a sequel since some villain victories open the doors for sequels (ie. Scar finally becoming the King of the Pride Lands after killing his brother and banishing his nephew, only to be dethroned by said nephew later in the movie, and Emperor Palpatine finally taking control of the Galaxy by manipulating the Chosen One, only for said Chosen One to betray and destroy him three sequels later). Also, sometimes these villains finally succeed in their goals, but not the way they expected (Wile E. Coyote finally catching Road Runner, but only when he became too small to eat him, and Max Mordon obtaining immortality, but in the form of an undead mummy).