A Karma Houdini is a villain who is never punished (or is insufficiently punished) for their evil actions. As such, when the story is over, this villain is not really defeated; he/she remains in position to continue his/her misdeeds, either towards the protagonists or a new target or, in the most extreme cases, is still as much of a threat as he/she was before, or even worse.

This also concerns corporations, species, organizations, or teams who are not disbanded at the very end of the story, thus they are still able to pose a threat even if some of their majors or agents were killed or imprisoned (e.g. Dead Tube).

A Karma Houdini happens when:

1. The villain is thwarted but not aptly punished in the resolution. This often happens when a villain is simply humiliated or harmed in a comical manner, but only faces a temporary punishment when they deserve worse, not enough to prevent them from striking again in the next episode, season or installment. Example: Sugar from Total Drama.
2. The villain makes an escape at the story's climax. Probably the most common type. Often, the villain escapes while the heroes are preoccupied with some other danger (usually that they created), sometimes because, in most stories, preventing whatever disaster was caused by a villain is more important than going after the villain himself. Sometimes this is done to set up a sequel, or at least leave the story open for one. However, this does not count when they do get their just desserts in the sequel/final installment. Examples include Hannibal Lecter, Dodge, and Joker.
3. The villain simply exits the story after performing their action, and is not encountered by the hero again. This usually occurs with minor antagonists (as opposed to central ones), as the most common scenario for this type of Karma Houdini is that the protagonist simply escapes the villain, who is not seen again because they are not relevant to the rest of the story. Examples: Honest John Worthington Foulfellow, Gideon, Stromboli, and the Coachman in Disney's Pinocchio, Scratcher from Rudolph and Frosty's Christmas in July, Bomb Voyage from The Incredibles and The Underminer from The Incredibles 2, DJ from Star Wars, School Mystery No.6 in Toilet-Bound Hanako-kun, Bulldog from Tom and Jerry: The Movie, Ryuk from Death Note, and Poppy's Killer from Married... With Children.
4. The villain is forgiven at the last second, without being truly redeemed. These villains spend the story causing strife, but when the conflict is over, the protagonists do not bear them any ill will, and in some case welcome them into their group of friends. They do stop doing evil, but never apologize and do not display any intention to bettering themselves, and their misdeeds are swept under the rug. Examples: Aro in Twilight, The Misfits in Jem and the Holograms, Isabela Keyes from Dead Rising, or Lucius Malfoy in Harry Potter.
5. The villain outright wins at the end of the story, defeating the hero (or other villains) and succeeding in all their evil plans. For extremely obvious reasons, this is, by far, the least common type and can reasonably be expected to occur only in the very darkest of stories, and is in fact very common in modern horror stories. Examples: Mai Mashiro in Dead Tube, Shao Kahn in the Original Timeline, Audrey II in the most common ending of Little Shop of Horrors, Mary Shaw in Dead Silence, Anton Chigurh in No Country for Old Men, Freddy Krueger in Nightmare on Elm Street 2010, Gao Qiu in The Water Margin, Foxy Loxy form Chicken Little, Noah Cross from Chinatown, Invictus from Final Space, Rustal Elion in Mobile Suit Gundam IRON-BLOODED ORPHANS, the Fruit Winders Gang in all of their comic strips, and Bagul in Sinister.
6. The villain is more of a jerk and thus many don't see the need to punish them (in general, they punish themselves). These kinds of villains are usually from sitcoms, children's cartoons or even racing films (If the protagonist wins) and thus are not really threats. Because of this, many heroes simply let the villain do what they want as long as they don't cause too much harm. Example: Chick Hicks from Cars.
7. The villain is ousted and/or exiled but not brought to justice. These villains are driven out by the hero or some other force of good, but is not aptly defeated and often given the chance to come back and cause further harm. Examples: Idi Amin, Doc Hopper, Puffy Fluffy, Sergeant Crushida Pepper, Dr. Wily, Mina Loveberry, Agatha Trunchbull, Parker Selfridge, and S. Wendell Palomino.

Important Notes

• By definition, a Karma Houdini is the strict opposite of a Scapegoat. Therefore, the two categories cannot overlap.
• Redeemed villains can never qualify as Karma Houdinis as they have faced redemption and have no reason to be punished, regardless of if their redemption seems forced.
• Deceased and Presumed Deceased villains usually do not count as Karma Houdinis; the only way for a dead or presumed dead character to count is if the death/presumed death happens because of environmental forces and not because someone killed them (e.g. Noah Cross, Solomon Goode, Former Head Trancy, Toplofty and O'Bloat, Sozin, Pharaoh Seti I, Donald Love, Mr. Grasping, Warren T. Rat, Oh Il-nam, Theodore Lagerfeld Jr., Perseus and Nefretiri), or if they are more likely to have survived and escaped rather than actually died (e.g. Rasmin Yelkov and Tord).
  • Undead villains who were killed, but returned and continue to commit atrocities without punishment may also qualify in certain circumstances (e.g. Hatbox Ghost).
    • This also applies to villains who were slain, but were completely brought back to life and escaped punishment as well. (e.g. Frieza, Chucky, and Evolt).
  • This also goes for Damned Souls as by there them being damned means that they are dead, even in the rare cases in which the damned villain is not dead the damnation is always sufficient enough punishment to be considered a damnation to begin with.
• Regardless of how painless their imprisonment, Imprisoned villains do not count as they are unable to pose a physical threat (outside their confinement). Of course, former inmates who succountully escape imprisonment can count (e.g. Azula).
• Villains whose status is dependent upon player choice cannot qualify unless they do not receive punishment for their actions in any possible ending of the game (e.g. Richard Perkins).
• Villains who took their own lives CANNOT count even if they try to or managed to escape punishment (Eric Harris, Dylan Klebold and their parodies, Samuel Norton, and Viktor Zakhaev).