History WhatHappenedToTheMouse / LiveActionFilms

** Film/AvengersAgeOfUltron ended with the Avengers moving into a new headquarters brimming with support personnel, including Dr. Erik Selvig and Dr. Helen Cho. Aside from an offscreen MissionControl heard in Film/AntMan, none of them were ever seen again.

** After the razing of the village by the slavers, the children were simply left behind by Middle Eye and the rest of the hunters. None of them are seen again in the end, leaving many UnfortunateImplications and FridgeHorror behind. It's possible that they simply fled deeper into the jungle to make new homes, just as Jaguar Paw and his family did at the end of the film.

* ''The Coca-Cola Kid'' actually introduces a real mouse early on in the story, and shows the main character interacting with it briefly a couple of times, although it seems to be destined to be forgotten since it has no significance in the plot. But, in a wonderful case of last-minute trope aversion, the mouse plays a notable role in the final scene.
* ''Film/ConfessionsOfAPsychoCat: What happened to Max and Anderson? They were last seen being locked in the freezer by Virginia. Did someone find them? Or did they die?

* In the movie ''Daddy's Girl'', near the middle Jody murders her mom's friend Rachel and her death goes unmentioned for the rest of the movie.

* ''Film/TheSwarm2020'': At one point in the movie, Laura, in a fit of rage, wrecked one if the three tents where Virginie keeps her flesh-eating locusts. This causes all the locusts she's keeping in the tent escaping and attacking Gaston and Huguette, the latter of whom the locusts take off with and eat. Virginie later finds Huguette's half-eaten corpse in a field covered in locusts, but the number of locusts on Huguette is nowhere near the amount that were seen escaping from the tent. This can't bode well for the ecosystem all those locusts are now loose in.

*** The fate of Paul, one of the two main characters in the film. He and FinalGirl Ginny seemingly defeat Jason in his cabin and walk away. Then there is a seen of Jason attacking them which may or may not be a dream (we don't see the outcome of it), and we cut to the next morning with Ginny being taken away in an ambulance and asking where Paul is. Paul's fate has been debated ever since the film came out, with good points being made by both sides.

* ''Film/SkyBandits'': What became of Mitsou and Yvette? The movie ends with Barney and Luke defeating the airship, and then cuts to the pair back in the US, the war presumably over, but no sign of their girlfriends. Did they leave them in war-ravaged Europe?

** Miss Gulch's fate is left unresolved, though the filmmakers intended the death of the Wicked Witch of the West is supposed to be a parallel for Miss Gulch being killed by the tornado. The illustration at the beginning of her on her bike flying through the air was supposed to be real, although her turning into the witch was just Dorothy's imagination. Also, what about Toto? Dorothy ran away because Miss Gulch had an order from the sheriff to have Toto killed. If Miss Gulch is dead, it's likely the order would be ignored. If she's alive...

* Quite a few important plot threads were left unresolved in ''Film/SuperMarioBros'' which would have been LeftHanging had they not been put on the sidelines by numerous script rewrites and reshoots. Namely, the [[AlternateUniverse parallel world]] [[CrapsackWorld is still slowly dying from lack of clean, renewable resources, Toad and innumerable prisoners are still de-evolved, and rival plumbers Mike and Doug never get their comeuppance.]] The King remaining a citywide fungus ''would'' have been this had Lance Henriksen not cameoed in a reshoot where his character returns to human form after Koopa's defeat.

* In Film/TheJerk Navin’s crazy abusive girlfriend Patty the Biker is last seen when she threatened to kill his new girlfriend Marie, Marie knocks her out with a double fisted punch, she is not seen again for the rest of the film.

* ''Film/TheManWhoKnewKnewTooLittle'':

** People who have not read the books may wonder as to why Barty Crouch Jr. from ''Goblet of Fire'' does not make a reappearance in later films after Azkaban sees a mass breakout, and other significant Death Eaters like Wormtail and Bellatrix are clearly identified. He'd be easy to notice, given his loyalty and insanity matched only by Bellatrix. Obviously, of course, it would create a plot hole for Fudge's denial of Voldemort's return in ''Order of the Phoenix'' if Barty did not receive the [[FateWorseThanDeath Dementor's Kiss]] as he did in the book.

* In Film/TheJerk Navin’s crazy abusive girlfriend Patty the BikerBabe is last seen when she threatened to kill his new girlfriend Marie, Marie knocks her out with a double fisted punch, she is not seen again for the rest of the film.

* For the first third of ''Film/{{Chef}}'', Molly seems to be the female lead, but when the action switches from California to Miami she vanishes from the movie. No affront to realism, just to our expectations. The cameos by Creator/DustinHoffman and Creator/RobertDowneyJr do advance the plot (such as it is) but we expect Molly to be developed.

** After his defeat in ''Film/TheDarkKnight'', ComicBook/TheJoker just up and vanishes; presumably taken to jail to answer for his crimes, but never once even referred to during the last scenes of ''The Dark Knight'', or the entirety of ''Film/TheDarkKnightRises''. Granted, [[ActorExistenceFailure there's a real life reason behind it]], but no real in-universe reason is given.

* In the Creator/AliciaSilverstone/Creator/KrystenRitter vampire-comedy ''Vamps'', a major plotpoint is that one of the female leads is dating the son of an infamous vampire hunter. While both father and son remain important characters throughout the film, the vampire hunter's wife vanishes entirely a little over a third of the way through. Especially jarring as not only was she implied to be completely in the know about vampires, she was last seen hypnotised by Krysten Ritter.

* The likely alien survivors in ''Film/IndependenceDay'', of which there would most possibly be a significant number, since one was able to survive a crash landing of its ship, an Earth-welcoming punch from Will Smith, and a head dissection.
** This is brought up in the sequel, ''Film/IndependenceDayResurgence'' - there were alien survivors, and some of them managed to survive long enough to [[SummonBiggerFish call for backup]].