History ChuckCunninghamSyndrome / LiveActionTV

** Leslie Winkle was a recurring character for the first three seasons as Sheldon's SitcomArchNemesis and occasional LoveInterest of Leonard and Howard. She disappeared after season 3, despite supposedly still being employed at [-CalTech=] along with the main cast. She did return for a brief cameo in Season 9.

* ''Series/{{Bunkd}}'': Xander, Tiffany, Jorge, Griff, Hazel (who returns in the season 4 episode, "Inn Trouble"), and Gladys all disappeared after the 2nd season and they don't get mentioned in the succeeding seasons. However, Gladys has been mentioned a few times. Xander also was mentioned in the episode Hazel guest star in.

* Played with on an episode of ''Series/{{Charmed|1998}}'' when a witch who seems to know the sisters ask for their help. She reveals she was their cat familiar Kit, who is prominently shown in the opening credits but vanished after a few episodes.

* ''Characters/ChicagoPD'': Vanessa Rojas was meant to replace Antonio Dawson since appearing Season 7 Episode 2, but when Season 8 appeared, she was written out of the story with no explanation. The reason why she was gone was because her actress playing the role, Lisseth Chavez, accepted a role in ''Heroes of Tomorrow''.

** Despite being one of Robb Stark's key supporters (and the first to declare him King in the North in the season one finale), Greatjon Umber is conspicuously absent from seasons two and three because the actor portraying him was unable to appear due to scheduling conflicts. Season six finally reveals that [[spoiler: he was KilledOffscreen.]]

* On the Creator/{{ABC}} ShortRunner ''Series/NoSoapRadio'', Roger's assistant Sharon (Creator/BrianneLeary) appears only in the first episode. She is replaced with Karen (Creator/HillaryKaren) in subsequent episodes without any explanation.

** When Jason returned in Zeo, he met Emily who became his love interest. He departed at the end of Zeo, going off with Emily, and appearing again in the Turbo movie but without her. He then disappears until the tenth anniversary special.

** Squatt and Baboo - where are they in Zeo? They used to cling onto Rita, and yet when she, Zedd, Finster, Rito and Goldar are forced out of their home, and made to travel around in their caravan, it seems Squatt and Baboo just kinda...vanished.

* Eddie is nowhere to be seen in ''Series/RavensHome'' and isn't even given a passing mention. During ''Series/ThatsSoRaven'', Eddie was the third major character, was best friends to Chelsea and Raven, and had a fair amount of ShipTease with Raven. His actor, Orlando Brown, was having troubles during the show's production so Eddie is just never mentioned.

* ''The Saddle Club'' had Ashley, Kristi, Deborah, Scooter, Red, and Drew removed after season 2, and wasn't mentioned by the other characters during the third season (minus Kristi), like they never even existed in the first place. To make matters worse they we're replaced by four new characters Desi, Simon, Jess, and Jack (though they we're likable).

* ''Series/NightCourt2023'':
** Court clerk Neil, played by Kapil Talwalkar, who had been implied to be a future love interest for Judge Stone, disappears after season one without any mention or explanation.

** Ms. Chatham (the girls mentor) vanished after the season 2 premiere. Ash, Emma's new love interest, vanished when she did not return for season 3,

* ''Series/H2OJustAddWater'': A few characters from season 1 disappeared with no explanation in season 2, such as [[AlphaBitch Miriam]] and Emma's love interest Byron.

* Emmett Milbarge from ''Series/{{Chuck}}'' was a prominent character. He was killed by a terrorist yet the other characters never it.

** Mulan joins the Merry Men early in season 3. When the company returns in the second half of that season, she is nowhere to be seen or heard. As with Creator/MeghanOry's case, Jamie Chung was also cast in [[Series/{{Believe}} another series]] at the time. (Incidentally, both series lasted only one season.) As with Ruby, she returns in season 5, having left the Merry Men under unrevealed circumstances and later saving and traveling with Ruby, last being seen in Oz after Ruby became a couple with Dorothy Gale.

* ''Series/ThePaperChase'': In the first episode, the study group included a woman (Linda O'Connor, played by Katharine Dunfee Clarke) who never appeared again. In the second episode, she was replaced without explanation by a different woman, Logan, a major character throughout Season One. When, after cancellation on its original network, the series returned for Season Two on a cable network, Logan had inexplicably vanished, never to be mentioned again.

* ''Series/{{Bunkd}}'': Xander, Tiffany, Jorge, Griff, Hazel and Gladys all disappeared after the 2nd season and they don't get mentioned in the succeeding seasons. However, Gladys has been mentioned a few times.

* ''The Saddle Club'' had Ashley, Kristi, Deborah, Scooter, Red, and Drew removed after season 2, and wasn't mentioned by the other characters during the third season(minus Kristi), like they never even existed in the first place. To make matters worse they we're replaced by four new characters Desi, Simon, Jess, and Jack (though they we're likable).

* ''YMMV/The Saddle Club'' had Ashley, Kristi, Deborah, Scooter, Red, and Drew removed after season 2, and wasn't mentioned by the other characters during the third season(minus Kristi), like they never even existed in the first place. To make matters worse they we're replaced by four new characters Desi, Simon, Jess, and Jack (though they we're likable).

* ''Series/The Saddle Club'' Ashley, Kristi, Deborah, Scooter, Red, and Drew was removed after season 2, and wasn't mentioned by the other characters during the third season(minus Kristi), like they never even existed in the first place. To make matters worse they we're replaced by four characters Desi, Simon, Jess, and Jack (though they we're likable).

* ''Series/{{Bunkd}}'': Xander, Tiffany, Jorge, Griff and Gladys all disappeared after the 2nd season and they don't get mentioned in the succeeding seasons. However, Gladys has been mentioned a few times.

** Another character, Bulldog, was given an entire episode's focus when he was introduced, then was never heard from or mentioned again. The story is that he was intended to be a recurring character afterwards, but the actor playing him couldn't work out his schedule to fit the show. WordofGod says in the podcast for Bulldog's lone episode, "Hero", that they decided to wrap up the character's arc within a single episode because Creator/CarlLumbly was an "expensive actor".

** General Voll was dropped and never mentioned or seen. WordofGod states that the writers forgot about him when replacing him with the second General.

** A couple of platoon members also disappeared with no explanation: Private Bracewell, who appears in the first episode only (WordofGod states he was cut because the writers felt his character was too much like Godfrey's) and Private Desmond, an AscendedExtra who goes on a mission with the main cast in the episode "Sons of the Sea", then is never heard from again.

** Judy Winslow, the youngest daughter, simply vanished after the fourth season due to a "budget consideration" for the series (they mean "the actress and her parents [[SmallNameBigEgo wanted a salary raise]]"). WordofGod says she would have returned for the originally planned GrandFinale of the series, if it had lasted to show the marriage between [[spoiler: Steve Urkel and Laura Winslow]]; however, there are several times in the series where Carl and Harriet explicitly state that they only have ''two'' children, which would have made her return a retcon of sorts. Word of God said the show was supposed to last another season where Judy would have attended Steve and Laura's wedding, explaining that she was living in Detroit with her aunt Rachel.

** WordofGod is that Chuck's sudden disappearance from the series was justified by his replacement actor, Randolph Roberts, deemed not sufficient for the role previously filled by Gavin O'Herlihy. Plus, it was apparent that the writing team found Fonzie as the better fit for the role of a big brother figure Richie needed. Gary Marshall decided to write Chuck out of the show to see how many angry backlash fan letters he'd receive. Luckily for him, he didn't receive many. More info can be found [[https://www.cheatsheet.com/entertainment/happy-days-why-chuck-was-written-out-of-the-show-completely.html/ here]].

** ''Series/StargateAtlantis'' has Hermiod, a recurring Asgard on the ''Daedalus'' introduced in Series 2. He later vanishes without explanation. At least, there is no explanation given in ''Atlantis''. The final episode of ''SG-1'' however, does show that the Asgard committed mass suicide, and WordofGod states that Hermiod died with the rest of his people.

*** At the end of Season 1 the Romulan Tal Shiar/Zhat Vash operative Narek is taken into custody by Altan Soong's androids after failing to manipulate his way to freedom. WordofGod says a scene showing him being taken into Starfleet custody pending trial for his crimes across the season was cut for time, so instead in the final version he is simply led away off screen and then never seen again.

* In ''Series/{{Taxi}}'', John Burns disappears after the first season without on-screen explanation (though he may have been fired for crashing the beloved Cab 804 beyond repair; WordofGod is that he was just too boring a character).

** They did it again with Agent Garrett Fowler. He was a major villain in Season 1 and the first half of Season 2. He and Neal face off in the mid-season finale, he gives them all the information he has, Peter brings him back to the Bureau, and... nothing. Absolutely nothing. We never find out what happened to him. He gets a passing reference at the beginning of Season 3, but it's only a mention of his and Neal's confrontation. WordofGod doesn't even seem to know. When asked, Jeff Eastin replied, "Peter killed him and buried him in the backyard." Needless to say, this inspired a lot of fan fiction...

** Larry was stated to be a father in the pilot episode. The kids were never mentioned again.

** The actress who played Old Nan in the pilot died, so she disappears for good. It is only in the Blu-Ray season 4 lore that Bran explains that Nan has indeed died.

*** Johnny Collins, Miley's crush in the pilot who was set up to be in the main cast, but then never appeared again, except for one late season 2 episode.

* ''Series/ThePaperChase'': In the pilot, the study group included a woman (Linda O'Connor, played by Katharine Dunfee Clarke) who never appeared again. In the second episode, she was replaced without explanation by a different woman, Logan, a major character throughout Season One. When, after cancellation on its original network, the series returned for Season Two on a cable network, Logan had inexplicably vanished, never to be mentioned again.

** Bob the receptionist, to the extent that some people now call this trope "being Bobbed". The thing about "being Bobbed" is the character has to have just become interesting when they vanished. In Bob's case [[spoiler: the County staff had recently discovered the "simple" foreign janitor rather patronizingly nicknamed "Bob" because Doug couldn't be bothered to learn to pronounce her real name had actually been a skilled cardiovascular surgeon in her native Poland]], and was only working as a receptionist until she could learn English well enough to gain Illinois state medical board certification. Also Maggie Doyle, who would disappear for long periods of time before ''reappearing'', to the extent that ''this'' trend was called "being Doyled". Ironically, Doyle herself was eventually "Bobbed" when she left in between seasons after a sexual harassment lawsuit against Romano fell apart.

** Ser Ilyn Payne was removed from Arya's list of people to kill and never mentioned again when his actor Wilko Johnson was diagnosed with terminal cancer (though his cancer was later revealed to be not terminal and has since undergone a successful chemotherapy). No explanation is given for why Arya forgave his character even though he was the one who beheaded her father.

** The Season 2 finale introduces a clone of Bruce Wayne, 514A. A significant plot point of Season 3 involves him pose as Bruce so that the real Bruce can be kidnapped without anyone noticing. As soon as Selina and Alfred work out he's not the real Bruce, however, he knocks them out, and is subsequently never seen or mentioned again. Granted, it was previously stated that clones do not live very long and that 514A would probably die before too long, but it's still odd that no-one ever thinks to follow up on what happened to him.

** Cynthia, a recurring character, originally has a one-sided crush towards Malcolm. She goes to Europe and when she comes back, is [[SheIsAllGrownUp all grown up]]. Malcolm eventually re-considers her as a potential love interest. In her final episode, she loudly (and falsely) proclaims in front of the whole school that they had previously been intimate. And then, without explanation, she never appears again.

** Creator/BettyWhite's character Ellen Harper-Jackson, Thelma's oldest daughter, was a recurring character from the original ''Series/TheCarolBurnettShow'' sketches who appeared semi-regularly during the show's first two seasons on NBC. Then after the show was brought back in syndication, she appeared in the third episode of the return season, then vanished for the rest of the series. Justified in the case of the actress herself, however, as White had landed herself [[Series/TheGoldenGirls a new television gig]] during the two-year interim between the NBC and syndicated runs.

** Never to be forgotten, of course, is the infamous Adam Milligan. Introduced in Season 4 as the Winchester's long-lost half-brother, Adam was only in a few episodes himself, but still managed to become a beloved character in that time. At the end of Season 5, he was dragged into The Pit by Sam, locking the two of them up for supposed eternity with the archangels possessing them. And then Sam got out. Sorta. Admittedly, Adam was mentioned a grand total of once following his dramatic and highly involuntary fall: when Death told Dean he could only rescue one soul from The Pit and made him choose between Adam's and Sam's. Dean predictably chose Sam, and Adam Milligan was not seen, mentioned or heard from again for many years, to the point where his being forgotten has actually become a fandom-wide meme. So, once again, never forget: Adam Milligan... Still In Hell.

* ''Series/{{Taxi}}'', in which John Burns disappears after the first season without on-screen explanation (though he may have been fired for crashing the beloved Cab 804 beyond repair; WordofGod is that he was just too boring a character.)

* ''Series/TrailerParkBoys'': Treena Lahey appears in the second season. She and her mom Barb were staying with Lahey over the summer. Barb became a RecurringCharacter, but as Creator/ElliotPage went to bigger ventures, Treena vanished after the season's end and was unheard of until an offhand mention in Season 11.
* ''Series/TheTudors'' actually had a rampant problem with this, resulting in an extensive rewriting of history. Among the important characters who disappear without a trace (and often have their historical roles delegated to someone else) are the Duke of Norfolk, Sir Anthony Knivert, Archbishop Cranmer, Pope Paul III, and Sir Francis Bryan.

* In ''City Homicide'', Simon Joyner quit the Melbourne Police's Homicide Unit on Season 4 Episode 2 due to mental health reasons. After that, he was never seen or mentioned again. Not even on his status on fixing his mind.

* ''Series/{{Degrassi|TheNextGeneration}}'':
** Kendra was a recurring character in many second and third season episodes but vanished without a trace in the fourth season. This was particularly strange because her brother and (ex-)boyfriend were still on the show. One wonders why she wasn't there to react when her brother got expelled and re-admitted, found religion and abandoned it, got married, etc. Some sources have it that Kendra was planned to have sex with Toby; the [[StageMom actress' parents]] disapproved and yanked her off the show.
** To a lesser extent, Chester, who was introduced as a new main character and vanished after about three episodes.
** Chris Sharpe, Emma's love interest in season 3; Derek Haig, a notable character until season 9 when he mysteriously disappears; Terri Mcgregor, whose sendoff is only explained in a deleted scene; and Principal Shepherd, former Lakehurst principal becomes acting principal of Degrassi after the merger, is fired due to an outburst at Clare, returns briefly after attending anger management classes, but is suddenly written off and replaced without explanation by old Degrassi principal Ms. Hatzilakos.
** Ms. H herself vanishes without a word the following season, with Mr. Simpson, the Media Immersion teacher, being bumped up to the top spot.
** Mrs. Kwan, who became one of the most prominent recurring characters, played this trope very well. She was the English teacher and a RecurringCharacter who appeared in several episodes from Seasons 1 to 9, but hasn't been seen in any of the episodes in Season 10. During that exact same season, Mrs. Dawes, the former art teacher, is now taking her place as the new English teacher with no word of Mrs. Kwan's disappearance. It's unknown whether she's no longer teaching at Degrassi or if she's simply teaching English class periods that the main characters aren't in.
** This happens in Season 12 to Wesley. [[WordOfGod His actor]] revealed the writers ran out of ideas for the character.
** This was also common in the original series too. For instance, a character named Susie Rivera was sexually assaulted before she disappeared. Another character named Scooter Williams did the same thing. Another example is Melanie Brodie. Stephanie Kaye was a major character in the first two seasons; at the beginning of the third, her brother mentions that she is now in private school.
** In the original series, and the early seasons of the current series, could be considered TruthInTelevision. Children and teenagers do move away without notice, and they seldom have any say in the decision.
** When Degrassi returned on Netflix and [=F2N=], now titled Degrassi: Next Class, three characters were noticeably absent: Jack, Arlene and Principal Pill. Jack's absence could at least be explained away as her no longer being apart of Power Cheer and Imogen (her former girlfriend) having graduated the previous season. But Arlene was both Hunter's only friend and potential love interest while Principal Pill took the place of Principal Simpson. The end of season 14 hints that Principal Simpson's firing is permanent and he's stated to be headed for Africa to build houses. By the time Next Class begins, Hunter now has THREE friends, one of which is a potential love interest and Arlene is never mentioned again. Meanwhile, Principal Simpson has quietly returned and Ms. Pill isn't mentioned.
** Dave Turner was one of the show's most prominent characters in Seasons 10-12. After [[spoiler: helping organize Adam's memorial]] he's never seen again.

* ''Series/{{Degrassi}}'':

* This happened by necessity on ''Series/BestFriendsWhenever'': Marci, a supporting character from Season 1, disappeared without an InUniverse explanation between seasons, despite being part of an OfficialCouple with a member of the main cast. This is due to the fact that Marci's actress, Madison Hu, took a lead role on ''Series/{{Bizaardvark}}'' and was thus unavailable.

** This also happens with a restaurant owner in the first season. The main characters had frequented a restaurant with a quirky owner, but in season 2 they suddenly start going to a diner instead and the restaurant is never mentioned again. The switch is never explained, even though Booth was friendly terms with the owner of the first restaurant.
*** Early episodes offer a possible explanation: the owner complained about the Squints bringing photos of crime scenes and bodies to the restaurant with the threat of not allowing them back if they kept it up. However, there was nothing confirming this as the reason they stopped going.

* ''Series/BrooklynNineNine'':
** The pilot briefly features Detective Daniels, who appears to be the third member of Hitchcock and Scully’s group. She does not appear again after the pilot.

* ''Series/{{Bunkd}}'':
** Xander, Tiffany, Jorge, Griff and Gladys all disappeared after the 2nd season and they don't get mentioned in the succeeding seasons. However, Gladys has been mentioned a few times.

** Andy Harris was referenced in a prior episode of ''Roseanne,'' when Dan jokingly says that "there ''used'' to be another kid around here," suggesting that Dan ''ate'' Andy because there wasn't enough food in the house.
*** Or maybe this was Jerry Conner, Dan and Roseanne's fourth child and second son, born in season eight of ''Roseanne'' and consigned to unmentioned oblivion in ''The Conners''.

** If a house counts, ''Dallas'' also did this with Southfork itself. In the pilot miniseries, Southfork is a huge mansion with two smaller houses attached by a breezeway. It is discussed in great detail in the first episode that J.R. and Sue Ellen live in their own little house, and the other house was built for Gary and Valene, and that that is where Bobby and Pam will live. After the first season, they switched to a different real life ranch for the exterior sets, and suddenly the Ewings were all living under one roof in a much smaller house.
*** This was actually an example of RealLifeWritesThePlot (or setting, in this case): When the second season began filming, the owner of the ranch used in the first season had been indicted for insider trading, was preparing for his trial, and did not want film crews around. So the producers switched to a different ranch that didn't have separate houses. Also, having everyone under one roof (as unrealistic as it may be) made for a lot more dramatic tension.

** Brendan Richards, from early Eighties spin-off ''Series/K9AndCompany'', is the teenaged ward of Sarah Jane Smith's Aunt Lavinia and it seems likely that he was intended to be a recurring character; indeed, he features prominently in the pilot. However, not only was a full series of ''K-9 and Company'' never commissioned, there is no further mention of Brendan in either ''Doctor Who'' or ''Series/TheSarahJaneAdventures''.
*** In the first story of Sarah Jane's Creator/BigFinish audio spin-off ''Sarah Jane Smith'', it is revealed by 2002 he's gotten a job in Silicon Valley, and is unable to attend Lavinia's funeral at the start of the story for that reason. The novelisation for [[Recap/TheSarahJaneAdventuresS1E9E10TheLostBoy "The Lost Boy"]] (the finale for the first series of ''The Sarah Jane Adventures'') states he's still working there as of 2008, and working on a project there with Mike Yates is why he didn't attend her wedding (this one from the novelisation for "[[Recap/TheSarahJaneAdventuresS3E5E6TheWeddingOfSarahJaneSmith The Wedding of Sarah Jane Smith]]").
** In the classic series, robot companion Kamelion boards the TARDIS and promptly vanishes for a long time, because the one crewmember actually capable of operating the robot died, leaving no one any clues how to program it. Kamelion eventually returned (by way of an actor covered in silver paint) and was destroyed, rather than try to mess around with the character anymore.
*** Kamelion appears in a deleted scene for "[[Recap/DoctorWhoS21E2TheAwakening The Awakening]]" that can be seen on the DVD, as well as several novels. One of those novels, ''The Crystal Bucephalus'', gives an explanation for why he made so few appearances (he was influenced by strong personalities, such as the main antagonist of the story).
** In "[[Recap/DoctorWhoS24E4Dragonfire Dragonfire]]", Glitz' partner Dibber is nowhere to be seen. It's quite possible that the two parted ways sometime after "[[Recap/DoctorWhoS23E1TheMysteriousPlanet The Mysterious Planet]]" or perhaps even that he was one of the crew members who Glitz decided to trade away.
*** Clarified in the ''Literature/PastDoctorAdventures'' novel "Mission: Impractical", in which Dibbler is killed while he and Glitz are assisting the Sixth Doctor, Frobisher, and an old gang of theirs in a complex heist.

* ''Series/LastOfTheSummerWine'':
** While most characters are given at least passing mention when they depart, there have been a few notable exceptions:

*** Mike's vanishing was slower than all that - in one ep, when it seemed Steve might end up in a circumstance where he couldn't have them around, the younger boys discussed possibly living with Mike. As to Ernie in that later sequence, it could be a nod to his adoption, or it could be a way of saying, 'If the older Chip doesn't recall their mother, then Ernie has no chance at all.' No one ever states that Bub/Mike/the adoption never happened. They just avoid all instances in which it might be brought up, to the point where certain Bub flashbacks now have Uncle Charlie edited in.

** Angela, Zack's love interest, disappeared after the first season. Richie, Trini's love interest, and Curtis, Zack's cousin, both disappeared after Trini and Zack were written off the show.
*** Richie and Curtis were very weak attempts at creating red herrings to the identity of the White Ranger. It was so clumsily done that Richie being a martial artist wasn't even mentioned until his last scene, ''after'' the White Ranger had been revealed.

** The salon crew got plenty of screentime and development during Roseanne's tenure, and the whole setting felt like a possible test for a spinoff launch. But, after Roseanne getting into an accident with one of the regular customers, she's never shown working at the salon ever again, and no mention is made of why. (Presumably, her job was filled while she recovered.)
*** Apparently she did keep working that salon job offscreen, because in early Season 3 when she got the Rodbell's job, Dan mentions something to the effect of she won't have to sweep hair anymore.

** ''Saved by the Bell'' is actually one of very few shows where the ''main character'' got Chucked. In its first season, the show focused on the kids' teacher, Miss Bliss, and the school faculty in general; the kids were meant to be supporting characters. This setup was quickly abandoned once it became obvious that the students had a lot more potential for comedy and stories than the teachers. Miss Bliss vanished from the show between seasons one and two. Even the ''school itself'' fell victim to this trope -- in season one, it's a junior high school in Indiana. From season two on, the same cast is attending a high school in California. No explanation is ever given.
*** ''Saved by the Bell'' is sort of a re-imagining of a different show, ''Good Morning, Miss Bliss'', which was then shown in later syndication as though it were the first season of ''Saved'', despite the resulting oddities in continuity.

* ''Series/SesameStreet'': With the exceptions of David and Mr. Hooper, the departures or absences of most human characters have not been explained.
*** Averted in the 50th Anniversary Celebration, where these human characters return.

*** The Stewart's obnoxious neighbor, Dontzig, who stopped appearing after season 1, except for one episode in season 3.

** Mikayla's (Music/SelenaGomez) last full appearance has her becoming friends with Miley despite her hatred of Miley's alter ego Hannah Montana (of which she was unaware). This could have easily been played with after Miley outs herself as Hannah Montana. Mikayla is last mentioned on a TV show using (likely) archive footage from her earlier 2 appearances and is never mentioned again. Behind the scenes, Selena Gomez had been cast as Alex in ''Series/WizardsOfWaverlyPlace''.

*** Roxy, Miley/Hannah's bodyguard, who disappeared after season 2.

* ''Series/ParksAndRecreation'': Despite his relative prominence early on, Mark Brendanawicz was never heard from or spoken of again after he was PutOnABus at the end of the second season. Ironically, Creator/MichaelSchur even promised Mark would return every once in a while, but when those plans failed to materialize and his departure turned into a LongBusTrip, Mark subsequently became something of an UnPerson in the series' timeline. This was especially noticeable in the Season 5 episodes "Halloween Surprise" (where Ann, whom Mark dated for most of Season 2, clears out some junk she had accumulated from her previous relationships to sell for charity and has a box for every other ex-boyfriend she's had except Mark) and "Pawnee Commons" (where the park design plans he drew up for the Lot 48 project and gave to Leslie before his departure are completely forgotten about). The only remnant of evidence of his existence following his departure from the series is the drawing he made in the Season 2 episode "The Camel" of a man feeding birds in a park still hanging in Ron's office. Furthermore, Mark was one of the few characters (if not the only one) to not come back for a cameo in the last season or in the GrandFinale episode (which was particularly egregious considering all the other minor and recurring characters that [[BackForTheFinale returned for a finale appearance]]), doesn't appear in any flashback clips, and doesn't appear in the 2020 ReunionShow either.

** Elaine's father Alton Benes appeared for only one episode and was quickly shuffled off the show and never mentioned again. This was due to him being played by infamously volatile actor Lawrence Tierney, who during filming of the episode scared the shit out of both the cast and crew, to the point that he tried to steal a knife prop from the set and, when called out on it by Jerry, responded by pretending to stab him with it.