History WhatHappenedToTheMouse / WesternAnimation

22nd Jun '16 7:43:47 PM Pichu-kun
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* The original Chipette from ''Franchise/AlvinAndTheChipmunks''. Charlene was introduced one year before the others in 1982. She has a resemblance to Brittany and sung a duet with Alvin in "You're The One That I Want". She was phased out when the other Chipette's were introduced. An unnamed chipmunk in the ''Rockin' Through The Decades'' special greatly resembles Charlene but has never been officially identified as her.



* In ''WesternAnimation/TheAnimalsOfFarthingWood'', Fox and Vixen's second son Friendly played a major role in the second season also when he was introduced, during season 3 he appeared for the first three episodes then is missing for the rest of the series.

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* In ''WesternAnimation/TheAnimalsOfFarthingWood'', ''WesternAnimation/TheAnimalsOfFarthingWood'':
**
Fox and Vixen's second son Friendly played a major role in the second season also as wel as when he was introduced, during introduced. During season 3 he appeared for the first three episodes but then is went missing for the rest of the series.
7th Apr '16 7:51:24 AM Clare
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* Two early episodes of ''WesternAnimation/DefendersOfTheEarth'' show Jedda projecting her powers through a "Pendent of Mystery". However, the Pendent's origins are never revealed and it disappears from the series as abruptly as it appeared, never to be seen or mentioned again.

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* Two early episodes of ''WesternAnimation/DefendersOfTheEarth'' show Jedda projecting her powers through a "Pendent "Pendant of Mystery". However, the Pendent's Pendant's origins are never revealed and it disappears from the series as abruptly as it appeared, never to be seen or mentioned again.
6th Apr '16 7:16:11 AM Clare
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Added DiffLines:

* Two early episodes of ''WesternAnimation/DefendersOfTheEarth'' show Jedda projecting her powers through a "Pendent of Mystery". However, the Pendent's origins are never revealed and it disappears from the series as abruptly as it appeared, never to be seen or mentioned again.
27th Mar '16 1:38:54 PM rafi
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* Several ''WesternAnimation/KingOfTheHill'' episodes had Bobby meet a girl and presumably ended up going out with her at the end of the episode. The next episode has him single again with no mention of the girl ever again (except for one girl, who was referenced in another episode and Connie, who was already part of the main cast when they broke up).
** Bill is also like this. In one episode he's dating Kahn's mother and mentions that he's still dating her in another one. Then, all of a sudden, he's single and lonely again. They dropped her because they decided they liked Bill as his lonely, pathetic self. Makes sense, but it would've been nice if they had actually provided an in-show explanation for her disappearance.
*** Kahn's Mom is another example, after her initial appearance, she is shown several times in the background at her son's house, but then sort of vanishes, and a passing reference implies she went back to Laos.
** Several plot motivations were also forgotten during the course of an episode in the series. One such example was from "The Courtship of Joseph's Father", where Dale Gribble has Joseph attend Spencer Academy over Arlen High School due to the fact that he was a great football player. The sole reason for Joseph being able to attend Spencer Academy (playing for the varsity squad) was never discussed while he attended the school.
** "Returning Japanese" had a subplot where Luanne, watching over Ladybird while the rest of the Hills were out in Japan, thinks that she had died and gets a new, identical bloodhound. However, upon attempting to transfer Ladybird's collar to the new bloodhound, she jumps up and Luanne soon gets confused as to which one was the original Ladybird. The closest thing this got to any resolution was Luanne walking both of the dogs (using color-coded collars) and thinking of using the excuse that she learned cloning. The other bloodhound is not mentioned in any later episodes.
** In the season 12 episode "Untitled Blake [=McCormack=] Project," Joseph meets a new girl named Kate and starts to find her attractive, only to learn that she is his half-sister (though both, along with Dale, remain in the dark about John Redcorn being the father). At the end of the episode, Kate and her mother move in with John Redcorn, but neither make a subsequent appearance.



* Several ''WesternAnimation/KingOfTheHill'' episodes had Bobby meet a girl and presumably ended up going out with her at the end of the episode. The next episode has him single again with no mention of the girl ever again (except for one girl, who was referenced in another episode and Connie, who was already part of the main cast when they broke up).
** Bill is also like this. In one episode he's dating Kahn's mother and mentions that he's still dating her in another one. Then, all of a sudden, he's single and lonely again. They dropped her because they decided they liked Bill as his lonely, pathetic self. Makes sense, but it would've been nice if they had actually provided an in-show explanation for her disappearance.
*** Kahn's Mom is another example, after her initial appearance, she is shown several times in the background at her son's house, but then sort of vanishes, and a passing reference implies she went back to Laos.
** Several plot motivations were also forgotten during the course of an episode in the series. One such example was from "The Courtship of Joseph's Father", where Dale Gribble has Joseph attend Spencer Academy over Arlen High School due to the fact that he was a great football player. The sole reason for Joseph being able to attend Spencer Academy (playing for the varsity squad) was never discussed while he attended the school.
** "Returning Japanese" had a subplot where Luanne, watching over Ladybird while the rest of the Hills were out in Japan, thinks that she had died and gets a new, identical bloodhound. However, upon attempting to transfer Ladybird's collar to the new bloodhound, she jumps up and Luanne soon gets confused as to which one was the original Ladybird. The closest thing this got to any resolution was Luanne walking both of the dogs (using color-coded collars) and thinking of using the excuse that she learned cloning. The other bloodhound is not mentioned in any later episodes.
** In the season 12 episode "Untitled Blake [=McCormack=] Project," Joseph meets a new girl named Kate and starts to find her attractive, only to learn that she is his half-sister (though both, along with Dale, remain in the dark about John Redcorn being the father). At the end of the episode, Kate and her mother move in with John Redcorn, but neither make a subsequent appearance.
27th Mar '16 1:38:15 PM rafi
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* In the ''WesternAnimation/AdventuresOfTheGalaxyRangers'' episode "Queen's Lair", a secondary character was forced to betray the Rangers because the Queen had [[IHaveYourWife his family held hostage]]. While the Rangers resort to an IndyPloy to work around this change in plans, we never do find out what happened to the poor man's family. Seeing as the BigBad is a classic GodSaveUsFromTheQueen, the things she's done to [[TheHero Zach's]] family, and the fact NeverSayDie was averted in the series...it doesn't look good for the poor bastard.
* The ''WesternAnimation/AmericanDad'' episode "Hurricane!" has news reporter Greg get sucked up into the sky by the titular hurricane. A later scene has his boyfriend asking people if they've seen him, but it's not revealed whether he survived or if the storm killed him. Seeing as how he appears in the following episodes, he has in fact survived.
* In ''WesternAnimation/TheAnimalsOfFarthingWood'', Fox and Vixen's second son Friendly played a major role in the second season also when he was introduced, during season 3 he appeared for the first three episodes then is missing for the rest of the series.
** In series 2, both Mossy and Ranger have sisters who each stop appearing after an episode or two.



* ''WesternAnimation/CodenameKidsNextDoor'':
** The show is usually good with continuity, which makes this oversight all the more damning: In "FUGITIVE", the operatives and the head of decommissioning, #86, are going after an escaped operative, #208, scheduled for decommissioning. #86 briefly mentions sending their best spy, #362, to infiltrate the Delightful Children's mansion (where the #208 is entering). While inside, #208 escapes from #86 and was last seen running down the hall, then a similarly-dressed #362 runs back and is mistaken for him and captured. #362 [[AscendedExtra became a major character in her own right]], but the show never got around to answering what happened to the escaped operative.
** What happened to the Delightful Children is also unknown, though with their final exit [[spoiler: [[KilledOffForReal it's assumed they drowned]]]].
* ''WesternAnimation/FamilyGuy''
** In the episode "You May Now Kiss the... Uh... Guy Who Receives" Chris' romance with the blonde girl vanishes after she talks to Chris outside the City Hall.
** In the episode where the Griffin house gets possessed by poltergeists, Herbert the Pedophile fights back against a tree demon who is about to eat Chris and the two (Herbert and the tree) fall to their dooms after the tree splits the ground open. On the TV version, this counts as a "What Happened to the Mouse" moment because we never see Herbert or the tree for the rest of the episode. On the season four DVD, however, [[spoiler:there's an extra scene where, after Peter ditches the cursed skull in the trash as The Griffins drive away, Herbert and the tree come out of the hole and apologize to each other for fighting. Herb then invites the tree over to his house and asks him if he's a "giving tree" or a "receiving tree"]]. Apparently, [[MoralGuardians The FOX censors]] turned this BrickJoke into a WhatHappenedToTheMouse moment all because [[spoiler:they didn't approve of the anal sex joke implied in the "giving/receiving tree" line]], which is odd, because FOX let SethMacFarlane and co. get away with pedophilia jokes centered around him (and some that aren't), though according to DVD commentary, the FOX censors have always been wary about Herbert the Pedophile [[note]](particularly on the episode where Chris has to work for Herbert to pay off a broken window. There were a lot of scenes and lines of dialogue that the FOX censors asked [=MacFarlane=] and company to tone down or eliminate[[/note]]). This (from the episode "Petergeist") is just one of the many examples of how wary FOX is about him.
** In another episode where Chris is put on a diet, Stewie gloats in front of him about being able to eat whatever he wants and consequentially gains a ton of weight and grows increasingly listless as a result. [[spoiler:In the final scene with Peter in the hospital, Stewie is skinny again, with no mention of how he lost weight.]]
* In the 1987 ''WesternAnimation/TeenageMutantNinjaTurtles1987'' miniseries, Shredder mutates more punks after Bebop and Rocksteady lose their first fight against the Turtles. Then for some reason he doesn't do anything with them, and the viewers next see them in a jail cell in the Technodrome's portal room. You never learn what happens to them when the Technodrome is sucked through the reversed portal.
* ''WesternAnimation/TeenageMutantNinjaTurtles2003'':
** The Rat King made his appearance in the fourth season, battling to a standstill with Leonardo. After the episode was over, it was made clear that the Rat King had survived and that there was a strong possibility of him showing up again in the future. Three seasons later ("The Lost Season", "Fast Forward", and "Back to the Sewers"), the Rat King still hasn't made any appearances and is never mentioned again. For better or worse, the Rat King subplot is more or less dropped after his Season Four episode. A better title would be "What Happened to the Rat?" in this case.
** What happened to the Rat King is answered in the "Back to the Sewer" season finale. Towards the end of the episode, he makes a cameo appearance, watching April and Casey's wedding from afar... The Rat King had promised himself that he would be watching the Turtles (presumably waiting for a good chance to strike). He was watching the Turtles when he was at the wedding. He probably had been watching them for a long time from off-screen.
* In the Teenage Mutant Ninja Turtles special ''WesternAnimation/TurtlesForever'', the 1987 version of April O'Neil was kidnapped by a giant mutant banana (don't ask) and no one knows what happens to her. Knowing 1987 April, the Turtles rescued her off-screen. That's what happens every episode, after all.
* ''WesternAnimation/TheSimpsons'' does this a lot. Whatever happens in the first act to get the actual plot running will never be mentioned again. Or if it is, it'll be to [[LampshadeHanging hang a lampshade]] on that the story's moved on and no-one's interested any more, like the badgers in "A Tale of Two Springfields".
** Or the first part of "Tennis the Menace" where Homer buys a burial plot for Grampa Simpson, but ends up creating a tennis court in the backyard after a coffin salesman tells Homer that his backyard needs to be the size of a tennis court if he's thinking of burying Grampa there. Or the first part of "The Cartridge Family," where the plot goes from the family trying to survive a town-wide soccer riot, complete with fighting and houses being burned to a very special episode (a Simpsonized version of it, anyway) where Homer buys a gun for protection and drives Marge and the kids away because of how irresponsible he is with it?
** The bagboy strike on "Simpson Safari" that was abandoned for yet another "The Simpsons are Going to [Insert Country/Continent/State Here]" plot. That episode [[LampshadeHanging hung a lampshade]] on it. After having lost their guide and become stuck on a boat floating down a river, Homer wonders if the bag boys have resolved their strike. The episode is later dedicated to the bag boys of America, "whose ineptness and greed were the inspiration for this episode".
** In another episode, Apu takes a bullet for James Woods (ItMakesSenseInContext), says his last words and then we see him make his recovery in a hospital along with Woods before the episode ends. The assailant, who could've very well shot again at his initial target, isn't shown again. [[spoiler:Neither is James Woods.]]
** In the episode where the ''Itchy and Scratchy'' producers are trying to introduce "Poochy", the show's new marketing-driven dog, a test audience sees Itchy and Scratchy driving to a fireworks factory. When they're about half a mile away from it, Poochy appears and begins doing all sorts of "cool" activities like skateboarding and playing basketball. Milhouse, who is watching the show at The Simpsons' house, screams "When are they going to get to the fireworks factory?!?"
** In "One Fish, Two Fish, Blowfish, Blue Fish", Homer is diagnosed with death in 22 hours. Having nothing to lose, he accepts Ned Flanders' invitation to a barbecue he doesn't want to go to. But at the end of the episode it's shown that Homer survives. The last shot of the episode is him eating chips and watching TV; the barbecue is never mentioned at all. The commentary discusses a deleted final scene where Homer has to deal with all the consequences of what he thought was his last day alive: not only is he stuck at the barbecue, but his father now wants to spend lots of time with him rather than having accepting their distant relationship, and Mr. Burns has some harsh words for him after Homer insulted him.
** After "Two Dozen and One Greyhounds", She's the Fastest just vanishes and is never mentioned again.
** Also, in "Insane Clown Poppy" Krusty seems to have a pretty strong relationship with his daughter at the end, who just vanishes next episode.
** On a similar, but minor vein, the half-greyhound half-poodle puppy Krusty gets from the Simpsons has yet to be seen again.
** In the episode "Like Father, Like Clown," Krusty's assistant, Lois Pennycandy obviously holds a torch for Krusty, but this has never been referenced or referred to again.
** Herb Powell, Homer's long-lost half-brother appears in two episodes early in the show's run, "Oh Brother, Where Art Thou?" (Season 2, Episode 15) and "Brother, Can You Spare Two Dimes?" (Season 3, Episode 24). After the second, [[spoiler:in which he regains the fortune of which Homer's blundering deprived him in the episode wherein we meet him,]] he all but vanishes. They later lampshade this, when Homer mentions in passing "my seldom-seen brother, Herb."
*** Apparently Marge and/or Homer still know ''where'' he can be contacted, they just haven't had a reason to in a while. In "Changing of the Guardian", (''Season 24'', Episode 11, ''22 seasons'' after BCYSTD), they consider him as a potential guardian for the kids in case of their unanticipated demise, but discount him [[spoiler:because he's poor again]].
** And in "Days of Wine and D'oh'ses" What Happened to the Bear? [[WordOfGod The commentators]] would also like to know.
** [[WordOfGod The commentators]] also want to know what happened to the Scottish woman that Willie meets in the episode "Whacking Day."
** In "Homer At The Bat", Ozzie Smith ends up visiting a literal tourist trap, the Springfield Mystery Spot, which turns out to be some kind of NegativeSpaceWedgie, and he promptly falls into it. In the snapshot at the end we can see his specter hovering over the rest of the group (presumably invisible to all save the viewers). We never find out if he managed to escape the Mystery Spot, [[OffscreenInertia so as far as we know he's still falling through space and time...]]
** It is also never revealed what happened to Scorpio after taking over the east coast and giving Homer a Football team as reward for helping his scheme.
** Viewers with long memories will remember "Bart Gets Hit by a Car", particularly the scene where Bart goes to Hell. The Devil looks him up on a computer and says, "You're not supposed to be here until the Yankees win the pennant again," and returns him to the world of the living. October 1996 came and went. Nothing. (Okay, in fairness, he thought it would take 100 years, but come on, not even a throwaway BrickJoke?) In the DVD commentary, someone says "Well, ''that'' didn't happen," and that's all anyone involved with the episode has ever said about it.
** Remember Bart's ''Franchise/StarTrek'' belt from the episode "The Homer They Fall"? Neither does he. The DVD commentary does make mention of how they pretty much abandoned the "Bart gets his ''Franchise/StarTrek'' belt stolen" storyline for the "Homer becomes a boxer" storyline (which they also pointed out was a rehash of "Homerpalooza," only instead of Homer taking hits to the gut without feeling pain, it was hits to the head).
** The first act of "Lisa The Greek" has a subplot about Bart going clothes shopping with Marge, getting embarassing clothes and ends with him in the car with the bullies outside waiting to kick his ass. It's never brought up again after that.
** This trope was essentially why "Mother Simpson" was produced, as the then current writing team couldn't believe that Homer's mother had [[MissingMom never been seen]] outside of a couple flashback cameos.
** At the end of "Two Bad Neighbors" former President Gerald Ford becomes Homer's new neighbor and they discover that they have a lot in common. Other than a picture of them together that Homer shows [[CosmicPlaything Frank Grimes]], he is never seen again afterwards.



* In the ''WesternAnimation/TransformersAnimated'' two-part episode "Megatron Rising", [[spoiler:the Dinobots appear in the first part, obviously hinting at an appearance in the second. Though the second part's main battle takes place on Dinobot Island, they are nowhere to be seen.]] This was explained in an interview with the story editor-originally [[spoiler:they were going to be beaten rather easily by the newly resurrected Megatron.]] However, the animation of the scene was terrible. That, and they were afraid the fans would be upset (especially since it violated the character profile saying [[spoiler:Grimlock was supposed to be as strong as Megatron]].
** By the GrandFinale, there are still several loose threads hanging, including [[spoiler:where were Blackarachnia and Waspinator at the end of "Predacons Rising", did Ultra Magnus recover from Shockwave's attack, where did the protoform Sari used to be come from]], as well as what happened to several characters who were simply absent in the end.
*** For example: [[spoiler:Given the manner in which Starscream finally dies, a bit of info on the fates of Wreck-Gar, the Constructicons, and [[OppositeSexClone Slipstream]] would have been nice. Not to mention Soundwave. And Team Chaar. And Skywarp and Thundercracker.]] Yeah, ''Animated'' has a lot of this. But that's what you get when a show is canceled.
*** Thankfully, a few things do get [[AllThereInTheManual explained in the two 'AllSpark Almanacs']], such as [[spoiler:the fact that Ultra Magnus was going to go offline]] in season 4, and that there was originally a scene cut from "Endgame", showing [[spoiler:Slipstream bringing Starscream back online (somehow)]].
* In an episode of ''TheProudFamily'', Penny befriends a Muslim girl and her family as part of a school project on racial diversity. One night, Penny and the Muslim family return home to find that someone scrawled a racist message on the garage door (in the original version, it read, "GO HOME, TOWELHEADS!"; in the reruns, the message was digitally altered to just read, "GO HOME!") and just before it cuts to a commercial, everyone looks shocked and horrified. When the show returns, the family is having dinner at a restaurant and no one mentions it again. Even though Penny ''does'' mention that Muslim people have been discriminated against more thanks to the 9/11 attacks and that doing so is wrong, the viewer is still left asking who scrawled that horrible message on the garage and why.

to:

* In ''WesternAnimation/{{Barnyard}}'', the ''WesternAnimation/TransformersAnimated'' two-part story essentially revolves around Otis, his dad, and a pregnant Cow named Daisy; Daisy later gives birth at the end of the movie. Come the spinoff series, ''WesternAnimation/BackAtTheBarnyard'', and both Daisy and her son are demoted to non-speaking background characters in early episodes. They're eventually never seen again, instead replaced with Abby.
* A relatively unimportant example in the ''WesternAnimation/BatmanBeyond''
episode "Megatron Rising", [[spoiler:the Dinobots appear in "Out of the first part, obviously hinting Past" is at an appearance in the second. Though beginning, when Terry and Bruce are watching ''Batman the second part's main battle takes place on Dinobot Island, they Musical''. The Stage Batman picks up Robin from the chair, and he gestures up toward the Bat-Signal. When the camera pans back down, the six villains are all on stage, and Batman is center, but Robin is nowhere to be seen.]] seen.
** From another episode, Derek Powers is betrayed by his manipulative son Paxton, with the unwitting help of Batman. At the end of the episode, Batman hints that Derek is not dead, and we are also led to believe that Paxton will serve as a villain for the remainder of the series, or at least in the next season, in a similar capacity that his father did. Derek is never seen again for the rest of the series, and Paxton only appears in cameos.
*** Blight pops up again in the tie-in comics, by now having degenerated so much he's forgotten his entire past life as Derek Powers. Batman and Stalker fight him, ending with [[spoiler: Blight being killed by molten steel.]]
* One episode of ''WesternAnimation/BatmanTheBraveAndTheBold'' has Batman hit with a ray that gives him a copy of Plastic Man's powers. By the end, the ray is destroyed and the villain who made it is petrified. So Batman still has the stretchy powers unless he removes the power some other way. So... is this the dawn of Plastic Batman?\\
...come on. This is Batman you're talking about. He always has a solution.
* ''WesternAnimation/BatmanMaskOfThePhantasm''
** It's never explained how exactly the Phantasm is able to teleport from place to place.
** Also, Phantasm [[spoiler:Andrea]] disappears into the smoke with [[spoiler:her]] target the Joker; their fates are left unknown to Batman. Later [[spoiler:Andrea]] is seen on a boat leaving Gotham for good, but no mention of the Joker's fate is made whatsoever. Joker is shown to be very much alive in the rest of the series, with no explanation of his escape given. However, Joker is well known for usage of NeverFoundTheBody, which is why the trope JokerImmunity exists.
This was eventually explained in an interview with the story editor-originally [[spoiler:they were going to be beaten rather easily by the newly resurrected Megatron.]] However, the animation of the scene was terrible. That, and they were afraid the fans would be upset (especially since it violated the character profile saying [[spoiler:Grimlock was supposed to be as strong as Megatron]].
** By the GrandFinale, there are still several loose threads hanging, including [[spoiler:where were Blackarachnia and Waspinator at the end of "Predacons Rising", did Ultra Magnus recover from Shockwave's attack, where did the protoform Sari used to be come from]], as well as what happened to several characters who were simply absent in the end.
*** For example: [[spoiler:Given the manner in which Starscream finally dies,
a bit of info on the fates of Wreck-Gar, the Constructicons, and [[OppositeSexClone Slipstream]] would have been nice. Not to mention Soundwave. And Team Chaar. And Skywarp and Thundercracker.]] Yeah, ''Animated'' has a lot of this. But that's what you get when a show is canceled.
*** Thankfully, a few things do get [[AllThereInTheManual explained in the two 'AllSpark Almanacs']], such as [[spoiler:the fact that Ultra Magnus was going to go offline]] in season 4, and that there was originally a scene cut from "Endgame", showing [[spoiler:Slipstream bringing Starscream back online (somehow)]].
* In an episode of ''TheProudFamily'', Penny befriends a Muslim girl and her family as part of a school project on racial diversity. One night, Penny and the Muslim family return home to find that someone scrawled a racist message on the garage door (in the original version, it read, "GO HOME, TOWELHEADS!"; in the reruns, the message was digitally altered to just read, "GO HOME!") and just before it cuts to a commercial, everyone looks shocked and horrified. When the show returns, the family is having dinner at a restaurant and no one mentions it again. Even though Penny ''does'' mention that Muslim people have been discriminated against more thanks to the 9/11 attacks and that doing so is wrong, the viewer is still left asking who scrawled that horrible message on the garage and why.
comic.



* In ''WesternAnimation/TheAnimalsOfFarthingWood'', Fox and Vixen's second son Friendly played a major role in the second season also when he was introduced, during season 3 he appeared for the first three episodes then is missing for the rest of the series.
** In series 2, both Mossy and Ranger have sisters who each stop appearing after an episode or two.
* ''WesternAnimation/{{Stripperella}}'': In "Curse of the Were-Beaver", Stripperella jostles Shaw the beaver hunter to stop him from killing the were-beaver, and he falls off the roller-coaster scaffolding, landing (off-camera) with a splat and several disgusted-looking onlookers. And... we never see what happened to him ever again, so either he landed in something icky that broke the fall, or [[MoralDissonance the heroine callously killed a man for doing his job.]]
** Stripperella was pretty much a part of an AnimalWrongsGroup in that episode, so yeah she would.



* Not so much a "what happened" as a "what ''will'' happen" in the case of Ahsoka in ''WesternAnimation/StarWarsTheCloneWars''. She's neither seen nor mentioned in ''StarWars Episode III'' (which ''The Clone Wars'' is a prequel to), which is understandable as she's a brand new character created for the series. However, that implies she's either dead or PutOnABus, thanks to the Jedi Purge. Is it too much to hope she doesn't become FaceHeelTurn fuel as the series progresses?
** As for the season 5 finale [[spoiler: she has left the Jedi Order, after getting zero support from her fellow Jedi (well, minus Anakin) when she was framed for a crime she didn't comit]]. WesternAnimation/StarWarsRebels reveals that [[spoiler:she survived past the events of Episode III and took on the identity of rebel cell leader Fulcrum.]]
** ''The Clone Wars'' also revealed [[spoiler: Darth Maul]] to be NotQuiteDead. The last we see of him he's being tortured by Sidious, who says he won't kill him and that he has plans for him. What happens to him after this is never addressed.
*** Though now Disney has nearly full rights and has announced Episode 7, so we may get some closure on those points
* In the first of the 2003 ''StrawberryShortcake'' DirectToVideo specials, Strawberry's pet Pupcake accidentally bumps into an arrow sign, [[RoadSignReversal making it point the other way]]. Although Strawberry sees this, she doesn't bother to fix the sign, which indicates that it should be a plot point later on. Yet the sign is never seen or mentioned again.
* ''WesternAnimation/SouthPark'':
** In the season three episode "Rainforest Schmainforest" (the one with the South Park kids being forced to join the Getting Gay With Kids Choir for an upcoming benefit concert in Costa Rica), Cartman keeps mentioning throughout Act I that Kyle has no dance rhythm because he's Jewish and, at the end of Act I, Kyle realizes this to his horror after Stan agrees with Cartman. With the exception of the bit where [[spoiler: the kids' choir teacher apologizes to the Freedom Fighter leader for Kyle's crummy dancing]] in Act II, the whole storyline about Kyle coming to terms with being a lousy dancer is never fleshed out or even alluded to for the rest of the episode. (He does still dance badly in the dance at the end).
** The episode "Coon vs. Coon and Friends" was really bad about this. The two previous episodes featured Tony Hayward and Captain Hindsight playing significant roles, but they don't appear in the finale or are even mentioned. (Hindsight removed his superpowers, but the last scene with him implies he regrets that decision, which seemed like it would lead to him getting them back.) There were also interdimensional beings besides Cthluthu who appeared in the first episode but were simply forgotten.
** Tweek becomes the "new Kenny" (translation: fourth main character) for the second part of season six. At the start of the third part, the Boys were inexplicably back to three. Somewhat justified since Cartman said they were thinking about firing him in his last episode as "the new Kenny," but there was a whole episode devoted to firing Butters, who continued to be a main character while Tweek was DemotedToExtra.
** "The Poor Kid" begins with Kenny and his rarely-seen siblings, Kevin and Karen, being taken into foster care. We follow Kenny and Karen throughout the rest of the episode, but Kevin disappears--they don't even throw in a line about him going to a different family or anything.
** The episode "The Snuke" is a parody of ''Series/TwentyFour,'' with part of the plot involving Hilary Clinton having a nuke implanted in her body. While the other characters manage to stop the terrorists who planned to detonate it, the plotline of her having it removed doesn't get resolved. This may be intentional, given how much ''24'' used this trope themselves.
** At the end of "201" we never found out how they got rid of Mecha Streisand. The Super Best Friends distract her with a Neil Diamond duet and that's the last we see of her.
* In the ''WesternAnimation/PhineasAndFerb'' episode "I, Brobot", Candace captures one of the Ferbots in a sack, and it then gets picked up by the garbage collectors behind her back. We never see what happens to that Ferbot afterwards. Also, we also don't see what happens to the Candroid after the episode.
** Perhaps the Ferbot got sent away to the place [[WesternAnimation/ToyStory3 where all trash]] [[FridgeHorror ends up.]]
** When the boys set [[Literature/CharlieAndTheChocolateFactory Oompa Loompa-like Ba-Dink-A-Dinks]] free, they promise to "lay waste to the surface dwellers." But it's a one-shot gag -- so far, their plot thread hasn't been resolved. They've had a few minor background appearances in subsequent episodes, but... not knowing where they are can be pure horror.
** In the episode "Run, Candace Run", the conflict is that Candace has made too many promises to her friends, family and boyfriend, and she has to accomplish multiple tasks in one day. One of those was apparently something involving her and Stacy on stage in a cow costume, however, Candace seemed to forget all about that, as we never see her do it and it is never addressed again.
* In the season 4 finale of ''WesternAnimation/WinxClub'' [[spoiler:Aisha decides to take the flower that was revived with the gift of life back to Andros as a memento of Nabu. What Aisha did with the flower or anything else she did on Andros has been left unkown.]]
** Oh, and what happened to Icy's pet duck after season 1?
** Diaspro disappears part way into season 3 after she said Bloom hadn't had the last of her. Beyond mentioning she was banished, her plot-line is dropped. She reappears in season 5 to help Sky, and except for Bloom being uncomfortable with her around, nothing is made of it.
** The pixies weren't seen or mentioned even once in season five. They returned in season six, but Digit and Tune were replaced with Cherie and Caramel with no explanation provided.
* Several ''WesternAnimation/KingOfTheHill'' episodes had Bobby meet a girl and presumably ended up going out with her at the end of the episode. The next episode has him single again with no mention of the girl ever again (except for one girl, who was referenced in another episode and Connie, who was already part of the main cast when they broke up).
** Bill is also like this. In one episode he's dating Kahn's mother and mentions that he's still dating her in another one. Then, all of a sudden, he's single and lonely again. They dropped her because they decided they liked Bill as his lonely, pathetic self. Makes sense, but it would've been nice if they had actually provided an in-show explanation for her disappearance.
*** Kahn's Mom is another example, after her initial appearance, she is shown several times in the background at her son's house, but then sort of vanishes, and a passing reference implies she went back to Laos.
** Several plot motivations were also forgotten during the course of an episode in the series. One such example was from "The Courtship of Joseph's Father", where Dale Gribble has Joseph attend Spencer Academy over Arlen High School due to the fact that he was a great football player. The sole reason for Joseph being able to attend Spencer Academy (playing for the varsity squad) was never discussed while he attended the school.
** "Returning Japanese" had a subplot where Luanne, watching over Ladybird while the rest of the Hills were out in Japan, thinks that she had died and gets a new, identical bloodhound. However, upon attempting to transfer Ladybird's collar to the new bloodhound, she jumps up and Luanne soon gets confused as to which one was the original Ladybird. The closest thing this got to any resolution was Luanne walking both of the dogs (using color-coded collars) and thinking of using the excuse that she learned cloning. The other bloodhound is not mentioned in any later episodes.
** In the season 12 episode "Untitled Blake [=McCormack=] Project," Joseph meets a new girl named Kate and starts to find her attractive, only to learn that she is his half-sister (though both, along with Dale, remain in the dark about John Redcorn being the father). At the end of the episode, Kate and her mother move in with John Redcorn, but neither make a subsequent appearance.

to:

* Not so much a "what happened" as a "what ''will'' happen" in the case of Ahsoka in ''WesternAnimation/StarWarsTheCloneWars''. She's neither seen nor mentioned in ''StarWars Episode III'' (which ''The Clone Wars'' ''WesternAnimation/CodenameKidsNextDoor'':
** The show
is a prequel to), usually good with continuity, which makes this oversight all the more damning: In "FUGITIVE", the operatives and the head of decommissioning, #86, are going after an escaped operative, #208, scheduled for decommissioning. #86 briefly mentions sending their best spy, #362, to infiltrate the Delightful Children's mansion (where the #208 is understandable as entering). While inside, #208 escapes from #86 and was last seen running down the hall, then a similarly-dressed #362 runs back and is mistaken for him and captured. #362 [[AscendedExtra became a major character in her own right]], but the show never got around to answering what happened to the escaped operative.
** What happened to the Delightful Children is also unknown, though with their final exit [[spoiler: [[KilledOffForReal it's assumed they drowned]]]].
* At the end of ''WesternAnimation/TheCritic'''s run (at least a couple of seasons), Jay, who up to that point hasn't had much luck with women, was in a steady relationship with a mature, decent, likable woman, and despite a few stumbles, they were hitting it off great. Then comes the short-lived internet adaptation, and
she's a brand new character created for the series. However, that implies she's either dead or PutOnABus, thanks to the Jedi Purge. Is it too much to hope she doesn't become FaceHeelTurn fuel as the series progresses?
** As for the season 5 finale [[spoiler: she has left the Jedi Order, after getting zero support from her fellow Jedi (well, minus Anakin) when she was framed for a crime she didn't comit]]. WesternAnimation/StarWarsRebels reveals that [[spoiler:she survived past the events of Episode III
completely gone with no explanation (along with his son and took on the identity of rebel cell leader Fulcrum.]]
longtime boss).
** ''The Clone Wars'' also revealed [[spoiler: Darth Maul]] to be NotQuiteDead. The last we see of him he's being tortured by Sidious, who says he won't kill him and that he has plans for him. What happens to him after this is never addressed.
*** Though now Disney has nearly full rights and has announced Episode 7, so we may get some closure on those points
*
In the first of webisode, Jay mentions his "second divorce", implying that the 2003 ''StrawberryShortcake'' DirectToVideo specials, Strawberry's pet Pupcake accidentally bumps relationship ended badly, but no details are given. Still nothing about his son or (now former) boss.
* ''WesternAnimation/DastardlyAndMuttleyInTheirFlyingMachines'': At the beginning of "A Plain Shortage of Planes", Dastardly's and Klunk's planes are destroyed when Muttley makes Zilly's crash
into an arrow sign, [[RoadSignReversal making them and it point the other way]]. Although Strawberry sees this, she doesn't bother to fix the sign, which indicates that it should be kickstarts a plot point later on. Yet about the sign is lack of available planes for the Vulture Squadron. However, Muttley's plane wasn't damaged and it's never seen or been confirmed Zilly's was. Neither plane has even been mentioned again.
* ''WesternAnimation/SouthPark'':
** In the season three episode "Rainforest Schmainforest" (the one with the South Park kids being forced to join the Getting Gay With Kids Choir for an upcoming benefit concert in Costa Rica), Cartman keeps mentioning throughout Act I that Kyle has no dance rhythm because he's Jewish and, at the end of Act I, Kyle realizes this to his horror after Stan agrees with Cartman. With the exception of the bit where [[spoiler: the kids' choir teacher apologizes to the Freedom Fighter leader for Kyle's crummy dancing]] in Act II, the whole storyline about Kyle coming to terms with being a lousy dancer is never fleshed out or even alluded to
for the rest of the episode. (He does still dance badly in the dance at the end).
** The episode "Coon vs. Coon and Friends" was really bad about this. The two previous episodes featured Tony Hayward and Captain Hindsight playing significant roles, but they don't appear in the finale or are even mentioned. (Hindsight removed his superpowers, but the last scene with him implies he regrets that decision, which seemed like it would lead to him getting them back.) There were also interdimensional beings besides Cthluthu who appeared in the first episode but were simply forgotten.
** Tweek becomes the "new Kenny" (translation: fourth main character) for the second part of season six. At the start of the third part, the Boys were inexplicably back to three. Somewhat justified since Cartman said they were thinking about firing him in his last episode as "the new Kenny," but there was a whole episode devoted to firing Butters, who continued to be a main character while Tweek was DemotedToExtra.
** "The Poor Kid" begins with Kenny and his rarely-seen siblings, Kevin and Karen, being taken into foster care. We follow Kenny and Karen throughout the rest of the episode, but Kevin disappears--they don't even throw in a line about him going to a different family or anything.
** The episode "The Snuke" is a parody of ''Series/TwentyFour,'' with part of the plot involving Hilary Clinton having a nuke implanted in her body. While the other characters manage to stop the terrorists who planned to detonate it, the plotline of her having it removed doesn't get resolved. This may be intentional, given how much ''24'' used this trope themselves.
** At the end of "201" we never found out how they got rid of Mecha Streisand. The Super Best Friends distract her with a Neil Diamond duet and that's the last we see of her.
* In the ''WesternAnimation/PhineasAndFerb'' episode "I, Brobot", Candace captures one of the Ferbots in a sack, and it then gets picked up by the garbage collectors behind her back. We never see what happens to that Ferbot afterwards. Also, we also don't see what happens to the Candroid after the episode.
** Perhaps the Ferbot got sent away to the place [[WesternAnimation/ToyStory3 where all trash]] [[FridgeHorror ends up.]]
** When the boys set [[Literature/CharlieAndTheChocolateFactory Oompa Loompa-like Ba-Dink-A-Dinks]] free, they promise to "lay waste to the surface dwellers." But it's a one-shot gag -- so far, their plot thread hasn't been resolved. They've had a few minor background appearances in subsequent episodes, but... not knowing where they are can be pure horror.
** In the episode "Run, Candace Run", the conflict is that Candace has made too many promises to her friends, family and boyfriend, and she has to accomplish multiple tasks in one day. One of those was apparently something involving her and Stacy on stage in a cow costume, however, Candace seemed to forget all about that, as we never see her do it and it is never addressed again.
* In the season 4 finale of ''WesternAnimation/WinxClub'' [[spoiler:Aisha decides to take the flower that was revived with the gift of life back to Andros as a memento of Nabu. What Aisha did with the flower or anything else she did on Andros has been left unkown.]]
** Oh, and what happened to Icy's pet duck after season 1?
** Diaspro disappears part way into season 3 after she said Bloom hadn't had the last of her. Beyond mentioning she was banished, her plot-line is dropped. She reappears in season 5 to help Sky, and except for Bloom being uncomfortable with her around, nothing is made of it.
** The pixies weren't seen or mentioned even once in season five. They returned in season six, but Digit and Tune were replaced with Cherie and Caramel with no explanation provided.
* Several ''WesternAnimation/KingOfTheHill'' episodes had Bobby meet a girl and presumably ended up going out with her at the end of the episode. The next episode has him single again with no mention of the girl ever again (except for one girl, who was referenced in another episode and Connie, who was already part of the main cast when they broke up).
** Bill is also like this. In one episode he's dating Kahn's mother and mentions that he's still dating her in another one. Then, all of a sudden, he's single and lonely again. They dropped her because they decided they liked Bill as his lonely, pathetic self. Makes sense, but it would've been nice if they had actually provided an in-show explanation for her disappearance.
*** Kahn's Mom is another example, after her initial appearance, she is shown several times in the background at her son's house, but then sort of vanishes, and a passing reference implies she went back to Laos.
** Several plot motivations were also forgotten during the course of an episode in the series. One such example was from "The Courtship of Joseph's Father", where Dale Gribble has Joseph attend Spencer Academy over Arlen High School due to the fact that he was a great football player. The sole reason for Joseph being able to attend Spencer Academy (playing for the varsity squad) was never discussed while he attended the school.
** "Returning Japanese" had a subplot where Luanne, watching over Ladybird while the rest of the Hills were out in Japan, thinks that she had died and gets a new, identical bloodhound. However, upon attempting to transfer Ladybird's collar to the new bloodhound, she jumps up and Luanne soon gets confused as to which one was the original Ladybird. The closest thing this got to any resolution was Luanne walking both of the dogs (using color-coded collars) and thinking of using the excuse that she learned cloning. The other bloodhound is not mentioned in any later episodes.
** In the season 12 episode "Untitled Blake [=McCormack=] Project," Joseph meets a new girl named Kate and starts to find her attractive, only to learn that she is his half-sister (though both, along with Dale, remain in the dark about John Redcorn being the father). At the end of the episode, Kate and her mother move in with John Redcorn, but neither make a subsequent appearance.
episode.



* A relatively unimportant example in the ''WesternAnimation/BatmanBeyond'' episode "Out of the Past" is at the beginning, when Terry and Bruce are watching ''Batman the Musical''. The Stage Batman picks up Robin from the chair, and he gestures up toward the Bat-Signal. When the camera pans back down, the six villains are all on stage, and Batman is center, but Robin is nowhere to be seen.
** From another episode, Derek Powers is betrayed by his manipulative son Paxton, with the unwitting help of Batman. At the end of the episode, Batman hints that Derek is not dead, and we are also led to believe that Paxton will serve as a villain for the remainder of the series, or at least in the next season, in a similar capacity that his father did. Derek is never seen again for the rest of the series, and Paxton only appears in cameos.
*** Blight pops up again in the tie-in comics, by now having degenerated so much he's forgotten his entire past life as Derek Powers. Batman and Stalker fight him, ending with [[spoiler: Blight being killed by molten steel.]]
* One episode of ''WesternAnimation/BatmanTheBraveAndTheBold'' has Batman hit with a ray that gives him a copy of Plastic Man's powers. By the end, the ray is destroyed and the villain who made it is petrified. So Batman still has the stretchy powers unless he removes the power some other way. So... is this the dawn of Plastic Batman?\\
...come on. This is Batman you're talking about. He always has a solution.
* ''WesternAnimation/BatmanMaskOfThePhantasm''
** It's never explained how exactly the Phantasm is able to teleport from place to place.
** Also, Phantasm [[spoiler:Andrea]] disappears into the smoke with [[spoiler:her]] target the Joker; their fates are left unknown to Batman. Later [[spoiler:Andrea]] is seen on a boat leaving Gotham for good, but no mention of the Joker's fate is made whatsoever. Joker is shown to be very much alive in the rest of the series, with no explanation of his escape given. However, Joker is well known for usage of NeverFoundTheBody, which is why the trope JokerImmunity exists. This was eventually explained in a comic.
* In ''WesternAnimation/KongTheAnimatedSeries'', no final fate for Tiger Lucy is given. In the final two episodes, every other enemy is defeated one way or another, but Tiger Lucy, the fourth of De La Porta's henchmen (who has the least screentime of the four) is never seen nor mentioned in the final episodes.

to:

* A relatively unimportant example in ''WesternAnimation/FamilyGuy''
** In
the ''WesternAnimation/BatmanBeyond'' episode "Out of the Past" is at the beginning, when Terry and Bruce are watching ''Batman the Musical''. The Stage Batman picks up Robin from the chair, and he gestures up toward the Bat-Signal. When the camera pans back down, the six villains are all on stage, and Batman is center, but Robin is nowhere to be seen.
** From another episode, Derek Powers is betrayed by his manipulative son Paxton,
"You May Now Kiss the... Uh... Guy Who Receives" Chris' romance with the unwitting help of Batman. At blonde girl vanishes after she talks to Chris outside the end of City Hall.
** In
the episode, Batman hints that Derek episode where the Griffin house gets possessed by poltergeists, Herbert the Pedophile fights back against a tree demon who is not dead, about to eat Chris and we are also led the two (Herbert and the tree) fall to believe that Paxton will serve their dooms after the tree splits the ground open. On the TV version, this counts as a villain for "What Happened to the remainder of the series, or at least in the next season, in a similar capacity that his father did. Derek is Mouse" moment because we never seen again see Herbert or the tree for the rest of the series, and Paxton only appears in cameos.
*** Blight pops up again
episode. On the season four DVD, however, [[spoiler:there's an extra scene where, after Peter ditches the cursed skull in the tie-in comics, by now having degenerated so much trash as The Griffins drive away, Herbert and the tree come out of the hole and apologize to each other for fighting. Herb then invites the tree over to his house and asks him if he's forgotten his entire past life as Derek Powers. Batman a "giving tree" or a "receiving tree"]]. Apparently, [[MoralGuardians The FOX censors]] turned this BrickJoke into a WhatHappenedToTheMouse moment all because [[spoiler:they didn't approve of the anal sex joke implied in the "giving/receiving tree" line]], which is odd, because FOX let SethMacFarlane and Stalker fight him, ending co. get away with [[spoiler: Blight pedophilia jokes centered around him (and some that aren't), though according to DVD commentary, the FOX censors have always been wary about Herbert the Pedophile [[note]](particularly on the episode where Chris has to work for Herbert to pay off a broken window. There were a lot of scenes and lines of dialogue that the FOX censors asked [=MacFarlane=] and company to tone down or eliminate[[/note]]). This (from the episode "Petergeist") is just one of the many examples of how wary FOX is about him.
** In another episode where Chris is put on a diet, Stewie gloats in front of him about
being killed by molten steel.able to eat whatever he wants and consequentially gains a ton of weight and grows increasingly listless as a result. [[spoiler:In the final scene with Peter in the hospital, Stewie is skinny again, with no mention of how he lost weight.]]
* One episode of ''WesternAnimation/BatmanTheBraveAndTheBold'' has Batman hit with ''WesternAnimation/GravityFalls'', as a ray that gives him a copy of Plastic Man's powers. By the end, the ray is destroyed and the villain who made it is petrified. So Batman still has the stretchy powers unless he removes the power some other way. So... is this the dawn of Plastic Batman?\\
...come on. This is Batman you're talking about. He always has a solution.
* ''WesternAnimation/BatmanMaskOfThePhantasm''
** It's never explained how exactly the Phantasm is able to teleport from place to place.
** Also, Phantasm [[spoiler:Andrea]] disappears into the smoke with [[spoiler:her]] target the Joker; their fates are left unknown to Batman. Later [[spoiler:Andrea]] is seen on a boat leaving Gotham for good, but no mention of the Joker's fate is made whatsoever. Joker is shown to be very much alive in the rest of the
mystery series, with no explanation has surprisingly few of his escape given. these, as most remaining plot threads were addressed in the GrandFinale in some fashion or covered in supplementary materials. However, Joker [[OnlyKnownbyTheirNickname Dipper's real name is well known for usage of NeverFoundTheBody, which still unknown]], as is the reason why certain characters have their respective symbols (such as Pacifica Northwest being the trope JokerImmunity exists. This was eventually explained in a comic.
Llama).
* In ''WesternAnimation/KongTheAnimatedSeries'', no ''WesternAnimation/JusticeLeague'', Supergirl's clone Galatea didn't seem dead upon her final fate for Tiger Lucy defeat, but no one sees her again, nor is given. In she ever mentioned. Considering she had a burn mark through her stomach, she was twitching, and had a comatose look on her face, she might as well be dead.
* At
the final two episodes, every other enemy is defeated one way or another, but Tiger Lucy, the fourth of De La Porta's henchmen (who has the least screentime end of the four) ''[[WesternAnimation/KaBlam Life With Loopy]]'' short "Larry's Girl", Larry starts dating a girl at his school, Stacey, [[BirdsOfAFeather from their mutual interest in]] [[ShowWithinAShow The Charlie Chicken Show]]. She is never seen nor mentioned again for the remainder of the series.
** At the end of "Goldfish Ghost", [[ItMakesSenseInContext a stray cat finds the ghost of Loopy's goldfish and starts chasing after him.]] After the fish gets away, Loopy notices how hungry the cat was, feeds it, and appears to take it in as her new pet. The cat is never seen after the episode, nor is it mentioned. However
in the final episodes.episode, "Rock 'N Roll Loopy", a litterbox can be seen briefly in one scene which may imply they still own the cat.



* In the ''WesternAnimation/AdventuresOfTheGalaxyRangers'' episode "Queen's Lair", a secondary character was forced to betray the Rangers because the Queen had [[IHaveYourWife his family held hostage]]. While the Rangers resort to an IndyPloy to work around this change in plans, we never do find out what happened to the poor man's family. Seeing as the BigBad is a classic GodSaveUsFromTheQueen, the things she's done to [[TheHero Zach's]] family, and the fact NeverSayDie was averted in the series...it doesn't look good for the poor bastard.
* ''Franchise/ScoobyDoo:''
** In ''WesternAnimation/ScoobyDooAndTheReluctantWerewolf'' Shaggy has a girlfriend named Googie, after the events of the movie she is never seen again.
*** Googie is one of several new love interests introduced in the Superstars 10 films (Snulu for Boo Boo, Desert Flower for Huck, etc) which originally they had planned to make a whole other set of Superstars 10 films with some sequels to the previous batch. But near all those got pushed to the way side in the Turner boyout, turning most of the characters to forever be lost mice.
** Most tag-alongs such as [[TheScrappy Scrappy]] and [[EthnicScrappy Flim-Flam]] don't appear that much. Scrappy appears in some movies (where he's actually pretty tolerable) and Flim-Flam is completely absent after ''WesternAnimation/The13GhostsOfScoobyDoo''.
*** ''WesternAnimation/ScoobyDooMysteryIncorporated'' did go TakeThat on them saying Flim-Flam was doing 25 to life after some major con that he pulled. And as for Scrappy? [[WeShallNeverSpeakOfThisAgain The gang refuses to speak of him.]]
** When the show was changed in the 80s there was no mentioning of what happened to Fred, Daphne and Velma. when Daphne returned to the show her exit was worked into the new premise but not explicitly stated on the show (she had gotten a job as a reporter). When Fred and Velma returned briefly in 1984, it was disclosed that Fred became a mystery writer and Velma was an intern at NASA.
* In ''WesternAnimation/TeenTitans'', Kitten disappears after her encounter with Starfire in "Calling All Titans", despite the fact that Killer Moth and Fang both appear in the ClimacticBattleResurrection. Kitten does just seem to be your average SpoiledBrat, having a half-moth father and a boyfriend whose head was a giant spider aside; she probably doesn't have any real combat training.
** And then there's Red X who was originally [[spoiler:Robin in disguise]], only for the costume to be stolen by a an unknown thief. After is final appearance being in "Revved Up" he is never seen again (not even during the final battle in "Calling All Titans"). We never find out who he was behind the mask or how he got the Red X costume.
** Speaking of "Revved Up", after the race for Robin's special suitcase, he opens it for his friends just before the end of the episode(the content's of the suitcase remain a mystery to the audience).
* In ''WesternAnimation/JusticeLeague'', Supergirl's clone Galatea didn't seem dead upon her final defeat, but no one sees her again, nor is she ever mentioned. Considering she had a burn mark through her stomach, she was twitching, and had a comatose look on her face, she might as well be dead.
* In ''WesternAnimation/{{Barnyard}}'', the story essentially revolves around Otis, his dad, and a pregnant Cow named Daisy; Daisy later gives birth at the end of the movie. Come the spinoff series, ''WesternAnimation/BackAtTheBarnyard'', and both Daisy and her son are demoted to non-speaking background characters in early episodes. They're eventually never seen again, instead replaced with Abby.

to:

* In ''WesternAnimation/KongTheAnimatedSeries'', no final fate for Tiger Lucy is given. In the ''WesternAnimation/AdventuresOfTheGalaxyRangers'' episode "Queen's Lair", a secondary character was forced to betray final two episodes, every other enemy is defeated one way or another, but Tiger Lucy, the Rangers because fourth of De La Porta's henchmen (who has the Queen had [[IHaveYourWife his family held hostage]]. While least screentime of the Rangers resort to an IndyPloy to work around this change in plans, we four) is never do find out seen nor mentioned in the final episodes.
* ''WesternAnimation/TheLifeAndTimesOfJuniperLee'': Whatever happened to those clones of June's friends? We see Ophelia's clone shopping at the same music store as the original but
what happened to the poor man's family. Seeing as others?
** Also,
the BigBad is a classic GodSaveUsFromTheQueen, turtle in "Little Big Mah" [[spoiler: that was used to defeat the things she's done to [[TheHero Zach's]] family, and the fact NeverSayDie was averted in the series...it doesn't look good for the poor bastard.
* ''Franchise/ScoobyDoo:''
** In ''WesternAnimation/ScoobyDooAndTheReluctantWerewolf'' Shaggy has a girlfriend named Googie, after the events of the movie she is never seen again.
*** Googie is one of several new love interests introduced in the Superstars 10 films (Snulu for Boo Boo, Desert Flower for Huck, etc) which originally they had planned to make a whole other set of Superstars 10 films with some sequels to the previous batch. But near
villain.]] The energy-syphoning Darnock demon sucked up all those got pushed to turtle years but where did the way side in the Turner boyout, turning most of the characters turtle itself go? Not to forever be lost mice.
** Most tag-alongs such as [[TheScrappy Scrappy]] and [[EthnicScrappy Flim-Flam]] don't appear
mention, it wasn't even a random turtle, but one that much. Scrappy appears in some movies (where he's actually pretty tolerable) and Flim-Flam is completely absent after ''WesternAnimation/The13GhostsOfScoobyDoo''.
*** ''WesternAnimation/ScoobyDooMysteryIncorporated'' did go TakeThat on them saying Flim-Flam
Ray Ray was doing 25 supposed to life after some major con that he pulled. And as for Scrappy? [[WeShallNeverSpeakOfThisAgain The gang refuses return to speak of him.]]
** When the show was changed in the 80s there was no mentioning of what happened to Fred, Daphne and Velma. when Daphne returned to the show her exit was worked into the new premise but not explicitly stated on the show (she had gotten
a job as a reporter). When Fred and Velma returned briefly in 1984, it was disclosed that Fred became a mystery writer and Velma was an intern at NASA.
* In ''WesternAnimation/TeenTitans'', Kitten disappears after her encounter with Starfire in "Calling All Titans", despite the fact that Killer Moth and Fang both appear in the ClimacticBattleResurrection. Kitten does just seem to be your average SpoiledBrat, having a half-moth father and a boyfriend whose head was a giant spider aside; she probably doesn't have any real combat training.
** And then there's Red X who was originally [[spoiler:Robin in disguise]], only for the costume to be stolen by a an unknown thief. After is final appearance being in "Revved Up" he is never seen again (not even
friend during the final battle in "Calling All Titans"). We episode. It's never find out who he was behind the mask or how he got the Red X costume.
** Speaking of "Revved Up", after the race for Robin's special suitcase, he opens it for his friends just before the end of the episode(the content's of the suitcase remain a mystery to the audience).
* In ''WesternAnimation/JusticeLeague'', Supergirl's clone Galatea didn't seem dead upon her final defeat, but no one sees her again, nor is she ever mentioned. Considering she had a burn mark through her stomach, she was twitching, and had a comatose look on her face, she might as well be dead.
* In ''WesternAnimation/{{Barnyard}}'', the story essentially revolves around Otis, his dad, and a pregnant Cow named Daisy; Daisy later gives birth at the end of the movie. Come the spinoff series, ''WesternAnimation/BackAtTheBarnyard'', and both Daisy and her son are demoted to non-speaking background characters in early episodes. They're eventually never seen again, instead replaced with Abby.
mentioned again.



* The ''WesternAnimation/AmericanDad'' episode "Hurricane!" has news reporter Greg get sucked up into the sky by the titular hurricane. A later scene has his boyfriend asking people if they've seen him, but it's not revealed whether he survived or if the storm killed him. Seeing as how he appears in the following episodes, he has in fact survived.
* At the end of ''WesternAnimation/TheCritic'''s run (at least a couple of seasons), Jay, who up to that point hasn't had much luck with women, was in a steady relationship with a mature, decent, likable woman, and despite a few stumbles, they were hitting it off great. Then comes the short-lived internet adaptation, and she's completely gone with no explanation (along with his son and longtime boss).
** In the first webisode, Jay mentions his "second divorce", implying that the relationship ended badly, but no details are given. Still nothing about his son or (now former) boss.
* WesternAnimation/SonicSatAM is full of examples. The first season had at least one episode where Sally is searching for her father. In the second season, she finds him, but no attempt was made to connect it with the clues found in her previous searches. In another second-season episode, they alter the past to ensure that their nanny survives to the present day, and it's revealed at the end of the episode that she does -- and is never seen again. (To be fair, she probably would have become a recurring character in the following season, which never got made.)
* This was the case with the original airing of ''WesternAnimation/RudolphTheRedNosedReindeer''. After it aired, Creator/RankinBass received a lot of letters from children asking whatever happened to the Misfit Toys, who weren't rescued and never mentioned again after their scene. In response, they created a new scene for the end credits that showed Santa rescuing the Misfit Toys and delivering them to children, which has been the version that aired ever since. On the other hand, this leaves Yukon Cornelius licking the end of his pick unexplained - to make room for the new scene, the punchline to the aforementioned build-up had to be cut. (He was hunting for a peppermint vein, in case you were curious.)
* ''WesternAnimation/StreetFighter'' had plenty. To quote the annotation near the end of [[http://www.youtube.com/watch?v=9qjuBlzEnuo this video]]: "What will Cammy do next? Can Ryu and Ken stop Akuma from murdering fighters and stealing their chi? Can T. Hawk set aside his feelings to stop Satin Hammer's terrorist vendetta against those who wronged her? Will Warrior's World ever be saved and will Chun Li ever reunite with her lover? Can Fei Long end the Triad's grip on Hong Kong and rebuild his tarnished career? Will Guile ever regain his old life and will Blanka regain his humanity? And what happened to Vega and Balrog?"
* In the ''WesternAnimation/SpongeBobSquarePants'' episode "Grandma's Kisses", [=SpongeBob=]'s grandmother puts Patrick to sleep on her couch. When the couch is next shown, Patrick is gone.
** Squilvia appeared in one episode and was never seen or mentioned again. According to Germany's Spongepedia, she appears briefly in the audience in "Smoothe Jazz at Bikini Bottom".
** There's also Squidward's pet female snail Snellie who appeared in "The Great Snail Race", she hasn't been seen since.
* ''WesternAnimation/TransformersPrime'' ends with the DTV movie ''Predacons Rising'', resolving all but one major plot line: the final fate of the villainess Airachnid, who was last seen going vampire on a horde of Insecticons after they were all trapped on one of Cybertron's moons. This is especially jarring when the entire movie takes place ''on Cybertron'', without a single break back to Earth.
** Speaking of Earth, after having elected to stay there in the final episode to help the US Military with ultra-major threats, Ratchet returns to Cybertron, but we never learn if he goes back to Earth, or what the human companions may have been up to in the meantime, let alone how they'd react to [[spoiler:Optimus' HeroicSacrifice.]]
** Shockwave is seen being attacked by a horde of [[spoiler: zombie Predacons]] and is assumed to be dead. However he appears later, damaged but alive, to urge the Predacons to help the Autobots stop [[spoiler: Unicron]]. He doesn't appear in the final battle and disappears for the rest of the movie.
* The original ''WesternAnimation/TheTransformers'' wasn't immune either. The last we see of the Decepticons' human collaborator [[MadScientist Dr. Arkeville]] is him telling Starscream that the 'Con has to go back to Earth (from Cybertron) personally. Afterwards, Arkeville is never seen again.
* ''WesternAnimation/GravityFalls'', as a mystery series, has surprisingly few of these, as most remaining plot threads were addressed in the GrandFinale in some fashion or covered in supplementary materials. However, [[OnlyKnownbyTheirNickname Dipper's real name is still unknown]], as is the reason why certain characters have their respective symbols (such as Pacifica Northwest being the Llama).



* ''WesternAnimation/TheLifeAndTimesOfJuniperLee'': Whatever happened to those clones of June's friends? We see Ophelia's clone shopping at the same music store as the original but what happened to the others?
** Also, the turtle in "Little Big Mah" [[spoiler: that was used to defeat the villain.]] The energy-syphoning Darnock demon sucked up all those turtle years but where did the turtle itself go? Not to mention, it wasn't even a random turtle, but one that Ray Ray was supposed to return to a friend during the episode. It's never mentioned again.
* ''WesternAnimation/SagwaTheChineseSiameseCat'': Ping-Wing the pigeon, the magistrate's pet, completely vanished after her first appearence.

to:

* ''WesternAnimation/TheLifeAndTimesOfJuniperLee'': Whatever happened ''WesternAnimation/PhineasAndFerb''
** In the episode "I, Brobot", Candace captures one of the Ferbots in a sack, and it then gets picked up by the garbage collectors behind her back. We never see what happens
to that Ferbot afterwards. Also, we also don't see what happens to the Candroid after the episode.
** Perhaps the Ferbot got sent away to the place [[WesternAnimation/ToyStory3 where all trash]] [[FridgeHorror ends up.]]
** When the boys set [[Literature/CharlieAndTheChocolateFactory Oompa Loompa-like Ba-Dink-A-Dinks]] free, they promise to "lay waste to the surface dwellers." But it's a one-shot gag -- so far, their plot thread hasn't been resolved. They've had a few minor background appearances in subsequent episodes, but... not knowing where they are can be pure horror.
** In the episode "Run, Candace Run", the conflict is that Candace has made too many promises to her friends, family and boyfriend, and she has to accomplish multiple tasks in one day. One of
those clones of June's friends? We was apparently something involving her and Stacy on stage in a cow costume, however, Candace seemed to forget all about that, as we never see Ophelia's clone shopping at her do it and it is never addressed again.
* In an episode of ''WesternAnimation/TheProudFamily'', Penny befriends a Muslim girl and her family as part of a school project on racial diversity. One night, Penny and
the same music store as Muslim family return home to find that someone scrawled a racist message on the garage door (in the original but what happened version, it read, "GO HOME, TOWELHEADS!"; in the reruns, the message was digitally altered to just read, "GO HOME!") and just before it cuts to a commercial, everyone looks shocked and horrified. When the show returns, the family is having dinner at a restaurant and no one mentions it again. Even though Penny ''does'' mention that Muslim people have been discriminated against more thanks to the others?
** Also, the turtle in "Little Big Mah" [[spoiler:
9/11 attacks and that was used to defeat doing so is wrong, the villain.]] The energy-syphoning Darnock demon sucked up all those turtle years but where did the turtle itself go? Not to mention, it wasn't even a random turtle, but one viewer is still left asking who scrawled that Ray Ray was supposed to return to a friend during horrible message on the episode. It's never mentioned again.
* ''WesternAnimation/SagwaTheChineseSiameseCat'': Ping-Wing the pigeon, the magistrate's pet, completely vanished after her first appearence.
garage and why.



* At the end of the ''[[WesternAnimation/KaBlam Life With Loopy]]'' short "Larry's Girl", Larry starts dating a girl at his school, Stacey, [[BirdsOfAFeather from their mutual interest in]] [[ShowWithinAShow The Charlie Chicken Show]]. She is never seen nor mentioned again for the remainder of the series.
** At the end of "Goldfish Ghost", [[ItMakesSenseInContext a stray cat finds the ghost of Loopy's goldfish and starts chasing after him.]] After the fish gets away, Loopy notices how hungry the cat was, feeds it, and appears to take it in as her new pet. The cat is never seen after the episode, nor is it mentioned. However in the final episode, "Rock 'N Roll Loopy", a litterbox can be seen briefly in one scene which may imply they still own the cat.
* ''WesternAnimation/DastardlyAndMuttleyInTheirFlyingMachines'': At the beginning of "A Plain Shortage of Planes", Dastardly's and Klunk's planes are destroyed when Muttley makes Zilly's crash into them and it kickstarts a plot about the lack of available planes for the Vulture Squadron. However, Muttley's plane wasn't damaged and it's never been confirmed Zilly's was. Neither plane has even been mentioned for the rest of the episode.

to:

* At This was the end of case with the ''[[WesternAnimation/KaBlam Life With Loopy]]'' short "Larry's Girl", Larry starts dating original airing of ''WesternAnimation/RudolphTheRedNosedReindeer''. After it aired, Creator/RankinBass received a girl at his school, Stacey, [[BirdsOfAFeather lot of letters from their mutual interest in]] [[ShowWithinAShow The Charlie Chicken Show]]. She is children asking whatever happened to the Misfit Toys, who weren't rescued and never seen nor mentioned again after their scene. In response, they created a new scene for the remainder end credits that showed Santa rescuing the Misfit Toys and delivering them to children, which has been the version that aired ever since. On the other hand, this leaves Yukon Cornelius licking the end of his pick unexplained - to make room for the new scene, the punchline to the aforementioned build-up had to be cut. (He was hunting for a peppermint vein, in case you were curious.)
* ''WesternAnimation/SagwaTheChineseSiameseCat'': Ping-Wing the pigeon, the magistrate's pet, completely vanished after her first appearence.
* ''Franchise/ScoobyDoo:''
** In ''WesternAnimation/ScoobyDooAndTheReluctantWerewolf'' Shaggy has a girlfriend named Googie, after the events
of the series.
movie she is never seen again.
*** Googie is one of several new love interests introduced in the Superstars 10 films (Snulu for Boo Boo, Desert Flower for Huck, etc) which originally they had planned to make a whole other set of Superstars 10 films with some sequels to the previous batch. But near all those got pushed to the way side in the Turner boyout, turning most of the characters to forever be lost mice.
** Most tag-alongs such as [[TheScrappy Scrappy]] and [[EthnicScrappy Flim-Flam]] don't appear that much. Scrappy appears in some movies (where he's actually pretty tolerable) and Flim-Flam is completely absent after ''WesternAnimation/The13GhostsOfScoobyDoo''.
*** ''WesternAnimation/ScoobyDooMysteryIncorporated'' did go TakeThat on them saying Flim-Flam was doing 25 to life after some major con that he pulled. And as for Scrappy? [[WeShallNeverSpeakOfThisAgain The gang refuses to speak of him.]]
** When the show was changed in the 80s there was no mentioning of what happened to Fred, Daphne and Velma. when Daphne returned to the show her exit was worked into the new premise but not explicitly stated on the show (she had gotten a job as a reporter). When Fred and Velma returned briefly in 1984, it was disclosed that Fred became a mystery writer and Velma was an intern at NASA.
* ''WesternAnimation/TheSimpsons'' does this a lot. Whatever happens in the first act to get the actual plot running will never be mentioned again. Or if it is, it'll be to [[LampshadeHanging hang a lampshade]] on that the story's moved on and no-one's interested any more, like the badgers in "A Tale of Two Springfields".
** Or the first part of "Tennis the Menace" where Homer buys a burial plot for Grampa Simpson, but ends up creating a tennis court in the backyard after a coffin salesman tells Homer that his backyard needs to be the size of a tennis court if he's thinking of burying Grampa there. Or the first part of "The Cartridge Family," where the plot goes from the family trying to survive a town-wide soccer riot, complete with fighting and houses being burned to a very special episode (a Simpsonized version of it, anyway) where Homer buys a gun for protection and drives Marge and the kids away because of how irresponsible he is with it?
** The bagboy strike on "Simpson Safari" that was abandoned for yet another "The Simpsons are Going to [Insert Country/Continent/State Here]" plot. That episode [[LampshadeHanging hung a lampshade]] on it. After having lost their guide and become stuck on a boat floating down a river, Homer wonders if the bag boys have resolved their strike. The episode is later dedicated to the bag boys of America, "whose ineptness and greed were the inspiration for this episode".
** In another episode, Apu takes a bullet for James Woods (ItMakesSenseInContext), says his last words and then we see him make his recovery in a hospital along with Woods before the episode ends. The assailant, who could've very well shot again at his initial target, isn't shown again. [[spoiler:Neither is James Woods.]]
** In the episode where the ''Itchy and Scratchy'' producers are trying to introduce "Poochy", the show's new marketing-driven dog, a test audience sees Itchy and Scratchy driving to a fireworks factory. When they're about half a mile away from it, Poochy appears and begins doing all sorts of "cool" activities like skateboarding and playing basketball. Milhouse, who is watching the show at The Simpsons' house, screams "When are they going to get to the fireworks factory?!?"
** In "One Fish, Two Fish, Blowfish, Blue Fish", Homer is diagnosed with death in 22 hours. Having nothing to lose, he accepts Ned Flanders' invitation to a barbecue he doesn't want to go to. But at the end of the episode it's shown that Homer survives. The last shot of the episode is him eating chips and watching TV; the barbecue is never mentioned at all. The commentary discusses a deleted final scene where Homer has to deal with all the consequences of what he thought was his last day alive: not only is he stuck at the barbecue, but his father now wants to spend lots of time with him rather than having accepting their distant relationship, and Mr. Burns has some harsh words for him after Homer insulted him.
** After "Two Dozen and One Greyhounds", She's the Fastest just vanishes and is never mentioned again.
** Also, in "Insane Clown Poppy" Krusty seems to have a pretty strong relationship with his daughter at the end, who just vanishes next episode.
** On a similar, but minor vein, the half-greyhound half-poodle puppy Krusty gets from the Simpsons has yet to be seen again.
** In the episode "Like Father, Like Clown," Krusty's assistant, Lois Pennycandy obviously holds a torch for Krusty, but this has never been referenced or referred to again.
** Herb Powell, Homer's long-lost half-brother appears in two episodes early in the show's run, "Oh Brother, Where Art Thou?" (Season 2, Episode 15) and "Brother, Can You Spare Two Dimes?" (Season 3, Episode 24). After the second, [[spoiler:in which he regains the fortune of which Homer's blundering deprived him in the episode wherein we meet him,]] he all but vanishes. They later lampshade this, when Homer mentions in passing "my seldom-seen brother, Herb."
*** Apparently Marge and/or Homer still know ''where'' he can be contacted, they just haven't had a reason to in a while. In "Changing of the Guardian", (''Season 24'', Episode 11, ''22 seasons'' after BCYSTD), they consider him as a potential guardian for the kids in case of their unanticipated demise, but discount him [[spoiler:because he's poor again]].
** And in "Days of Wine and D'oh'ses" What Happened to the Bear? [[WordOfGod The commentators]] would also like to know.
** [[WordOfGod The commentators]] also want to know what happened to the Scottish woman that Willie meets in the episode "Whacking Day."
** In "Homer At The Bat", Ozzie Smith ends up visiting a literal tourist trap, the Springfield Mystery Spot, which turns out to be some kind of NegativeSpaceWedgie, and he promptly falls into it. In the snapshot at the end we can see his specter hovering over the rest of the group (presumably invisible to all save the viewers). We never find out if he managed to escape the Mystery Spot, [[OffscreenInertia so as far as we know he's still falling through space and time...]]
** It is also never revealed what happened to Scorpio after taking over the east coast and giving Homer a Football team as reward for helping his scheme.
** Viewers with long memories will remember "Bart Gets Hit by a Car", particularly the scene where Bart goes to Hell. The Devil looks him up on a computer and says, "You're not supposed to be here until the Yankees win the pennant again," and returns him to the world of the living. October 1996 came and went. Nothing. (Okay, in fairness, he thought it would take 100 years, but come on, not even a throwaway BrickJoke?) In the DVD commentary, someone says "Well, ''that'' didn't happen," and that's all anyone involved with the episode has ever said about it.
** Remember Bart's ''Franchise/StarTrek'' belt from the episode "The Homer They Fall"? Neither does he. The DVD commentary does make mention of how they pretty much abandoned the "Bart gets his ''Franchise/StarTrek'' belt stolen" storyline for the "Homer becomes a boxer" storyline (which they also pointed out was a rehash of "Homerpalooza," only instead of Homer taking hits to the gut without feeling pain, it was hits to the head).
** The first act of "Lisa The Greek" has a subplot about Bart going clothes shopping with Marge, getting embarassing clothes and ends with him in the car with the bullies outside waiting to kick his ass. It's never brought up again after that.
** This trope was essentially why "Mother Simpson" was produced, as the then current writing team couldn't believe that Homer's mother had [[MissingMom never been seen]] outside of a couple flashback cameos.
** At the end of "Goldfish Ghost", [[ItMakesSenseInContext a stray cat finds the ghost of Loopy's goldfish "Two Bad Neighbors" former President Gerald Ford becomes Homer's new neighbor and starts chasing after him.]] After the fish gets away, Loopy notices how hungry the cat was, feeds it, and appears to take it they discover that they have a lot in as her new pet. The cat common. Other than a picture of them together that Homer shows [[CosmicPlaything Frank Grimes]], he is never seen after again afterwards.
* WesternAnimation/SonicSatAM is full of examples. The first season had at least one episode where Sally is searching for her father. In
the second season, she finds him, but no attempt was made to connect it with the clues found in her previous searches. In another second-season episode, nor is it mentioned. However in the final episode, "Rock 'N Roll Loopy", a litterbox can be seen briefly in one scene which may imply they still own alter the cat.
* ''WesternAnimation/DastardlyAndMuttleyInTheirFlyingMachines'': At
past to ensure that their nanny survives to the beginning of "A Plain Shortage of Planes", Dastardly's and Klunk's planes are destroyed when Muttley makes Zilly's crash into them and it kickstarts a plot about the lack of available planes for the Vulture Squadron. However, Muttley's plane wasn't damaged present day, and it's revealed at the end of the episode that she does -- and is never been confirmed Zilly's was. Neither plane seen again. (To be fair, she probably would have become a recurring character in the following season, which never got made.)
* ''WesternAnimation/SouthPark'':
** In the season three episode "Rainforest Schmainforest" (the one with the South Park kids being forced to join the Getting Gay With Kids Choir for an upcoming benefit concert in Costa Rica), Cartman keeps mentioning throughout Act I that Kyle
has no dance rhythm because he's Jewish and, at the end of Act I, Kyle realizes this to his horror after Stan agrees with Cartman. With the exception of the bit where [[spoiler: the kids' choir teacher apologizes to the Freedom Fighter leader for Kyle's crummy dancing]] in Act II, the whole storyline about Kyle coming to terms with being a lousy dancer is never fleshed out or even been mentioned alluded to for the rest of the episode.episode. (He does still dance badly in the dance at the end).
** The episode "Coon vs. Coon and Friends" was really bad about this. The two previous episodes featured Tony Hayward and Captain Hindsight playing significant roles, but they don't appear in the finale or are even mentioned. (Hindsight removed his superpowers, but the last scene with him implies he regrets that decision, which seemed like it would lead to him getting them back.) There were also interdimensional beings besides Cthluthu who appeared in the first episode but were simply forgotten.
** Tweek becomes the "new Kenny" (translation: fourth main character) for the second part of season six. At the start of the third part, the Boys were inexplicably back to three. Somewhat justified since Cartman said they were thinking about firing him in his last episode as "the new Kenny," but there was a whole episode devoted to firing Butters, who continued to be a main character while Tweek was DemotedToExtra.
** "The Poor Kid" begins with Kenny and his rarely-seen siblings, Kevin and Karen, being taken into foster care. We follow Kenny and Karen throughout the rest of the episode, but Kevin disappears--they don't even throw in a line about him going to a different family or anything.
** The episode "The Snuke" is a parody of ''Series/TwentyFour,'' with part of the plot involving Hilary Clinton having a nuke implanted in her body. While the other characters manage to stop the terrorists who planned to detonate it, the plotline of her having it removed doesn't get resolved. This may be intentional, given how much ''24'' used this trope themselves.
** At the end of "201" we never found out how they got rid of Mecha Streisand. The Super Best Friends distract her with a Neil Diamond duet and that's the last we see of her.
* In the ''WesternAnimation/SpongeBobSquarePants'' episode "Grandma's Kisses", [=SpongeBob=]'s grandmother puts Patrick to sleep on her couch. When the couch is next shown, Patrick is gone.
** Squilvia appeared in one episode and was never seen or mentioned again. According to Germany's Spongepedia, she appears briefly in the audience in "Smoothe Jazz at Bikini Bottom".
** There's also Squidward's pet female snail Snellie who appeared in "The Great Snail Race", she hasn't been seen since.
* Not so much a "what happened" as a "what ''will'' happen" in the case of Ahsoka in ''WesternAnimation/StarWarsTheCloneWars''. She's neither seen nor mentioned in ''StarWars Episode III'' (which ''The Clone Wars'' is a prequel to), which is understandable as she's a brand new character created for the series. However, that implies she's either dead or PutOnABus, thanks to the Jedi Purge. Is it too much to hope she doesn't become FaceHeelTurn fuel as the series progresses?
** As for the season 5 finale [[spoiler: she has left the Jedi Order, after getting zero support from her fellow Jedi (well, minus Anakin) when she was framed for a crime she didn't comit]]. WesternAnimation/StarWarsRebels reveals that [[spoiler:she survived past the events of Episode III and took on the identity of rebel cell leader Fulcrum.]]
** ''The Clone Wars'' also revealed [[spoiler: Darth Maul]] to be NotQuiteDead. The last we see of him he's being tortured by Sidious, who says he won't kill him and that he has plans for him. What happens to him after this is never addressed.
*** Though now Disney has nearly full rights and has announced Episode 7, so we may get some closure on those points.
* In the first of the 2003 ''WesternAnimation/StrawberryShortcake'' DirectToVideo specials, Strawberry's pet Pupcake accidentally bumps into an arrow sign, [[RoadSignReversal making it point the other way]]. Although Strawberry sees this, she doesn't bother to fix the sign, which indicates that it should be a plot point later on. Yet the sign is never seen or mentioned again.
* ''WesternAnimation/StreetFighter'' had plenty. To quote the annotation near the end of [[http://www.youtube.com/watch?v=9qjuBlzEnuo this video]]: "What will Cammy do next? Can Ryu and Ken stop Akuma from murdering fighters and stealing their chi? Can T. Hawk set aside his feelings to stop Satin Hammer's terrorist vendetta against those who wronged her? Will Warrior's World ever be saved and will Chun Li ever reunite with her lover? Can Fei Long end the Triad's grip on Hong Kong and rebuild his tarnished career? Will Guile ever regain his old life and will Blanka regain his humanity? And what happened to Vega and Balrog?"
* ''WesternAnimation/{{Stripperella}}'': In "Curse of the Were-Beaver", Stripperella jostles Shaw the beaver hunter to stop him from killing the were-beaver, and he falls off the roller-coaster scaffolding, landing (off-camera) with a splat and several disgusted-looking onlookers. And... we never see what happened to him ever again, so either he landed in something icky that broke the fall, or [[MoralDissonance the heroine callously killed a man for doing his job.]]
** Stripperella was pretty much a part of an AnimalWrongsGroup in that episode, so yeah she would.
* In ''WesternAnimation/TeenTitans'', Kitten disappears after her encounter with Starfire in "Calling All Titans", despite the fact that Killer Moth and Fang both appear in the ClimacticBattleResurrection. Kitten does just seem to be your average SpoiledBrat, having a half-moth father and a boyfriend whose head was a giant spider aside; she probably doesn't have any real combat training.
** And then there's Red X who was originally [[spoiler:Robin in disguise]], only for the costume to be stolen by a an unknown thief. After is final appearance being in "Revved Up" he is never seen again (not even during the final battle in "Calling All Titans"). We never find out who he was behind the mask or how he got the Red X costume.
** Speaking of "Revved Up", after the race for Robin's special suitcase, he opens it for his friends just before the end of the episode(the content's of the suitcase remain a mystery to the audience).
* In the 1987 ''WesternAnimation/TeenageMutantNinjaTurtles1987'' miniseries, Shredder mutates more punks after Bebop and Rocksteady lose their first fight against the Turtles. Then for some reason he doesn't do anything with them, and the viewers next see them in a jail cell in the Technodrome's portal room. You never learn what happens to them when the Technodrome is sucked through the reversed portal.
* ''WesternAnimation/TeenageMutantNinjaTurtles2003'':
** The Rat King made his appearance in the fourth season, battling to a standstill with Leonardo. After the episode was over, it was made clear that the Rat King had survived and that there was a strong possibility of him showing up again in the future. Three seasons later ("The Lost Season", "Fast Forward", and "Back to the Sewers"), the Rat King still hasn't made any appearances and is never mentioned again. For better or worse, the Rat King subplot is more or less dropped after his Season Four episode. A better title would be "What Happened to the Rat?" in this case.
** What happened to the Rat King is answered in the "Back to the Sewer" season finale. Towards the end of the episode, he makes a cameo appearance, watching April and Casey's wedding from afar... The Rat King had promised himself that he would be watching the Turtles (presumably waiting for a good chance to strike). He was watching the Turtles when he was at the wedding. He probably had been watching them for a long time from off-screen.
* In the Teenage Mutant Ninja Turtles special ''WesternAnimation/TurtlesForever'', the 1987 version of April O'Neil was kidnapped by a giant mutant banana (don't ask) and no one knows what happens to her. Knowing 1987 April, the Turtles rescued her off-screen. That's what happens every episode, after all.
* The original ''WesternAnimation/TheTransformers'' wasn't immune either. The last we see of the Decepticons' human collaborator [[MadScientist Dr. Arkeville]] is him telling Starscream that the 'Con has to go back to Earth (from Cybertron) personally. Afterwards, Arkeville is never seen again.
* In the ''WesternAnimation/TransformersAnimated'' two-part episode "Megatron Rising", [[spoiler:the Dinobots appear in the first part, obviously hinting at an appearance in the second. Though the second part's main battle takes place on Dinobot Island, they are nowhere to be seen.]] This was explained in an interview with the story editor-originally [[spoiler:they were going to be beaten rather easily by the newly resurrected Megatron.]] However, the animation of the scene was terrible. That, and they were afraid the fans would be upset (especially since it violated the character profile saying [[spoiler:Grimlock was supposed to be as strong as Megatron]].
** By the GrandFinale, there are still several loose threads hanging, including [[spoiler:where were Blackarachnia and Waspinator at the end of "Predacons Rising", did Ultra Magnus recover from Shockwave's attack, where did the protoform Sari used to be come from]], as well as what happened to several characters who were simply absent in the end.
*** For example: [[spoiler:Given the manner in which Starscream finally dies, a bit of info on the fates of Wreck-Gar, the Constructicons, and [[OppositeSexClone Slipstream]] would have been nice. Not to mention Soundwave. And Team Chaar. And Skywarp and Thundercracker.]] Yeah, ''Animated'' has a lot of this. But that's what you get when a show is canceled.
*** Thankfully, a few things do get [[AllThereInTheManual explained in the two 'AllSpark Almanacs']], such as [[spoiler:the fact that Ultra Magnus was going to go offline]] in season 4, and that there was originally a scene cut from "Endgame", showing [[spoiler:Slipstream bringing Starscream back online (somehow)]].
* ''WesternAnimation/TransformersPrime'' ends with the DTV movie ''Predacons Rising'', resolving all but one major plot line: the final fate of the villainess Airachnid, who was last seen going vampire on a horde of Insecticons after they were all trapped on one of Cybertron's moons. This is especially jarring when the entire movie takes place ''on Cybertron'', without a single break back to Earth.
** Speaking of Earth, after having elected to stay there in the final episode to help the US Military with ultra-major threats, Ratchet returns to Cybertron, but we never learn if he goes back to Earth, or what the human companions may have been up to in the meantime, let alone how they'd react to [[spoiler:Optimus' HeroicSacrifice.]]
** Shockwave is seen being attacked by a horde of [[spoiler: zombie Predacons]] and is assumed to be dead. However he appears later, damaged but alive, to urge the Predacons to help the Autobots stop [[spoiler: Unicron]]. He doesn't appear in the final battle and disappears for the rest of the movie.
* ''WesternAnimation/WinxClub''
** Stella is the fairy of the Sun and the Moon, but all her powers focus on the sun (except a few in the fourth season, but these focus more on stars). Nickelodeon seems to have tried to amend this by calling Stella the fairy of the shining sun.
** Sky had a dog but, aside from a brief flashback in season 2, it has never been seen again after season 1.
** And where did Hagen go after the ''[[TheMovie The Secret of the Lost Kingdom]]''? The way he and Faragonda acted indicated that she wouldn't let him go into isolation again, but he never even gets mentioned after the Movie.
** In the second episode of season 4, the Winx said that, after finding the last Earth Fairy (Roxy), they'd take her to the pixie village so a pixie could bond with her. This never happens in this season, but it might still happen in season 5.
** As of Season 5, the Pixie Pets aren't seen or even mentioned anymore, though this was bound to happen given that their impact on the plot during season 4 was nonexistent, and they weren't particularly popular even with the target audience.
** The pixies weren't seen or mentioned even once in season five. They returned in season six, but Digit and Tune were replaced with Cherie and Caramel with no explanation provided.
** The Witches. The first season heavily implied witches were the evil counterpart towards the fairies, and Griffin was heavily set-up to be the BiggerBad of the Trix. Towards the end of the season, the witches turn out be...not exactly evil...with no explanation as to exactly what sets them apart from fairies anyway. In general, the witches except the Trix slowly got phased out of the show.
** In the season 4 finale of [[spoiler:Aisha decides to take the flower that was revived with the gift of life back to Andros as a memento of Nabu. What Aisha did with the flower or anything else she did on Andros has been left unkown.]]
* Several ''WesternAnimation/KingOfTheHill'' episodes had Bobby meet a girl and presumably ended up going out with her at the end of the episode. The next episode has him single again with no mention of the girl ever again (except for one girl, who was referenced in another episode and Connie, who was already part of the main cast when they broke up).
** Bill is also like this. In one episode he's dating Kahn's mother and mentions that he's still dating her in another one. Then, all of a sudden, he's single and lonely again. They dropped her because they decided they liked Bill as his lonely, pathetic self. Makes sense, but it would've been nice if they had actually provided an in-show explanation for her disappearance.
*** Kahn's Mom is another example, after her initial appearance, she is shown several times in the background at her son's house, but then sort of vanishes, and a passing reference implies she went back to Laos.
** Several plot motivations were also forgotten during the course of an episode in the series. One such example was from "The Courtship of Joseph's Father", where Dale Gribble has Joseph attend Spencer Academy over Arlen High School due to the fact that he was a great football player. The sole reason for Joseph being able to attend Spencer Academy (playing for the varsity squad) was never discussed while he attended the school.
** "Returning Japanese" had a subplot where Luanne, watching over Ladybird while the rest of the Hills were out in Japan, thinks that she had died and gets a new, identical bloodhound. However, upon attempting to transfer Ladybird's collar to the new bloodhound, she jumps up and Luanne soon gets confused as to which one was the original Ladybird. The closest thing this got to any resolution was Luanne walking both of the dogs (using color-coded collars) and thinking of using the excuse that she learned cloning. The other bloodhound is not mentioned in any later episodes.
** In the season 12 episode "Untitled Blake [=McCormack=] Project," Joseph meets a new girl named Kate and starts to find her attractive, only to learn that she is his half-sister (though both, along with Dale, remain in the dark about John Redcorn being the father). At the end of the episode, Kate and her mother move in with John Redcorn, but neither make a subsequent appearance.
18th Feb '16 11:45:56 PM RacattackForce
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* In one episode of ''WesternAnimation/GravityFalls'', [[ItMakesSenseInContext two clones of Dipper steal Robbie's bike and ride away with it.]] They don't show up again, but while the clones do have a WeaksauceWeakness of [[KillItWithWater dissolving in liquids]] that would explain their disappearance, Robbie is never seen with his bike after this.
** During the credit scroll of the series finale, a picture shows the clones out in the woods in a tent and rain coats, so they're still out there. No sign of the bike, though.
** A minor example: In the fourth episode, Mabel saves a lobster that was going to be eaten at a restaurant then brings it to the shack's aquarium. In later episodes, the aquarium is empty.
** Another minor example from the series finale, there is no sign of what happened to Blendin Blandin.

to:

* In one episode of ''WesternAnimation/GravityFalls'', [[ItMakesSenseInContext two clones as a mystery series, has surprisingly few of Dipper steal Robbie's bike and ride away with it.]] They don't show up again, but while the clones do have a WeaksauceWeakness of [[KillItWithWater dissolving in liquids]] that would explain their disappearance, Robbie is never seen with his bike after this.
** During the credit scroll of the series finale, a picture shows the clones out
these, as most remaining plot threads were addressed in the woods GrandFinale in a tent and rain coats, so they're some fashion or covered in supplementary materials. However, [[OnlyKnownbyTheirNickname Dipper's real name is still out there. No sign of unknown]], as is the bike, though.
** A minor example: In
reason why certain characters have their respective symbols (such as Pacifica Northwest being the fourth episode, Mabel saves a lobster that was going to be eaten at a restaurant then brings it to the shack's aquarium. In later episodes, the aquarium is empty.
** Another minor example from the series finale, there is no sign of what happened to Blendin Blandin.
Llama).
16th Feb '16 9:35:40 PM IvanovTroping97
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Added DiffLines:

** Another minor example from the series finale, there is no sign of what happened to Blendin Blandin.
15th Feb '16 9:09:15 PM Duffan
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** a minor example: In the fourth episode, Mabel saves a lobster that was going to be eaten at a restaurant then bring it to the shack's aquarium. In later episodes, the aquarium is empty.

to:

** During the credit scroll of the series finale, a picture shows the clones out in the woods in a tent and rain coats, so they're still out there. No sign of the bike, though.
** A
minor example: In the fourth episode, Mabel saves a lobster that was going to be eaten at a restaurant then bring brings it to the shack's aquarium. In later episodes, the aquarium is empty.
13th Jan '16 7:59:28 PM Doug86
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** The episode "The Snuke" is a parody of ''TwentyFour,'' with part of the plot involving Hilary Clinton having a nuke implanted in her body. While the other characters manage to stop the terrorists who planned to detonate it, the plotline of her having it removed doesn't get resolved. This may be intentional, given how much ''24'' used this trope themselves.

to:

** The episode "The Snuke" is a parody of ''TwentyFour,'' ''Series/TwentyFour,'' with part of the plot involving Hilary Clinton having a nuke implanted in her body. While the other characters manage to stop the terrorists who planned to detonate it, the plotline of her having it removed doesn't get resolved. This may be intentional, given how much ''24'' used this trope themselves.
20th Dec '15 1:22:12 PM luiz4200
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Added DiffLines:

* ''WesternAnimation/DastardlyAndMuttleyInTheirFlyingMachines'': At the beginning of "A Plain Shortage of Planes", Dastardly's and Klunk's planes are destroyed when Muttley makes Zilly's crash into them and it kickstarts a plot about the lack of available planes for the Vulture Squadron. However, Muttley's plane wasn't damaged and it's never been confirmed Zilly's was. Neither plane has even been mentioned for the rest of the episode.
This list shows the last 10 events of 171. Show all.
http://tvtropes.org/pmwiki/article_history.php?article=WhatHappenedToTheMouse.WesternAnimation