* ActorAllusion: In "The Fury", Yuki wonders which place Nichole trained, and one of those places was [[Manga/{{Naruto}} Konoha]]. In both Japanese and Mexican Spanish dubs, Nichole's son (Gumball) is voiced by the same voice actresses who voiced Naruto Uzumaki in their respective languages (Creator/JunkoTakeuchi and Isabel Martiñon, respectively), who happens to live there.
* AdoredByTheNetwork: Creator/CartoonNetwork gave this a huge buildup: a "sneak peek" six days before the premiere (which also aired on Boomerang and streamed on the website), a countdown bug on-screen the day ''of'' the premiere, and at least one rerun a day for the entire week afterward.
** The Latin American version of Cartoon Network brings this trope UpToEleven. They went to such extent to dedicate a whole day to the show. They also use them to announce the new stuff of the month and air reruns '''three''' times a day, everyday, and they often air clips of this show during the commercial breaks for no reason at all.
** Cartoon Network also put a lot of faith into the show by renewing a second season a week before the premier, though this could have been done as the show spends a long time in production. Cartoon Network later renewed the show for a fourth and fifth season before the third season had even started airing and just renewed it for a sixth (though, as mentioned before, this could be because the show spends a long time in production due to its use of mixed media and the crew members actually take care to make sure that even the weakest episodes are done well).
* ChildrenVoicingChildren: The initial voice actors for Gumball (Logan Grove), Darwin (Kwesi Boakye), and Anais (Kyla Rae Kowalewski) took the roles at approximately the age of 12, 11, and 9, respectively. About three years later, Gumball and Darwin were recast for the third season due to puberty: Gumball's new voice actor (Jacob Hopkins) was 11 and Darwin's (Terrell Ransom Jr.) was 10. Anais's original voice actor continues to voice her even as she enters her teens as Kowalewski can still make her voice sound young -- and the fact that girls' voices don't change as dramatically as boys' voices do during puberty.
* CreatorsFavoriteEpisode: [[http://imaginationstudios.cartoonnetwork.co.uk/videos/ A series of videos]] posted for Cartoon Network's Imagination Studios project had numerous staff talk about their favorite episodes (or possibly just their favorite in season three; the videos seem unclear).
** Show creator Ben Bocquelet's favorite episode is the season finale "The Money".
** Bocquelet's pet dog, Woody (yes, really) likes the episode "The Procrastinators".
** Animator Yannis Boultadakis' favorite episode is "The Puppy".
** Sarah Fell (producer) likes "The Pizza".
** Richard Overall's (voice director and editor) favorite episode is "The Fraud".
** Pascalita Bories (another animator) likes "The Joy" and considers Miss Simian her favorite character.
** Juan Pedro's (another animator) favorite episode is "The Mothers".
** Guillaume Cassuto's (one of the series writers) favorite episode is "The Shell".
* TheDanza: The character Teri (the hypochondriac paper cutout bear) is played by Teresa Gallagher. Given Teri is a supporting character and Gallagher also voices one of the main cast, this was probably a coincidence.
* DawsonCasting: With the exception of the Watterson children, the kid characters are played by adults.
* DescendedCreator:
** Sussie's model and first season voice actor is Aurelie Charbonnier, one of the show's storyboard artists and the creator's girlfriend. Her screams and laughs are provided by the show's creator and Charbonnier's boyfriend, Ben Bocquelet. As of season two, Fergus Craig is now the voice of Sussie on the rare times that Sussie speaks coherently, though Aurelie's chin is still used for the character (as seen in Sussie's dream on "The Night", where Sussie is revealed to be Aurelie's chin and Sussie/Aurelie freaks out and runs off the set after filming) and Ben Bocquelet still does Sussie's screaming and laughing.
** Billy Parham (the blue egg boy whose mother is the snobbish, deranged orange woman Felicity) is voiced by Richard Overall, the show's voice director and one of its editors. He also performed some of the songs that weren't sung by a character, such as "Because We're Men" in "The Mustache".
** Mic Graves, the series's director, voices Banana Joe, Banana Joe's father Banana Bob, and the voiceover heard through "The Voice" [[spoiler:which is actually William the flying eyeball's internal monologue]].
* DevelopmentGag:
** "The Mystery": The yearbook pictures for Alan and Tina both use their designs from the early reel/one-minute pilot.
** The class photo in "The Curse" that gets impaled by pencils has everyone but Darwin and Gumball as they were in the early reel/one-minute pilot.
** "The Fridge": Nicole puts war paint on her face during the paintball game. The way she does it covers her whiskers, making them look longer, and thus more like they did in her character model before it was redesigned for the second season.
** "The Skull": When Clayton shapeshifts into Banana Joe's form, he looks like Joe's first season character model instead of his current one.
** "The Bumpkin": Gumball tries to escape school by [[CatapultToGlory sitting on one side of the seesaw while Hector stomps on the other]], the same thing he and Darwin did to try and escape from the school in the early reel/one-minute pilot.
** "The Storm": Masami's crush on Alan is funnier when you realize that they ''were'' a couple in the pitch pilot.
** "The Tape": The group shot where Gumball almost [[TitleDrop says the show's name]] is very similar to the end of [[https://www.youtube.com/watch?v=W7uDvSITrlY one of the series's trailers]], except that was in front of the Watterson house and everyone managed to say it.
** "The Void": Darwin's CGI design from the pitch pilot can be seen floating around, as can a rejected design for the Watterson house.
* {{Defictionalization}}: [[Website/YouTube Elmore]] [[FictionalCounterpart Stream]] is now real...[[http://www.youtube.com/user/ElmoreStream sorta]].
* FakeAmerican: Most of the cast besides the voice actors for Gumball, Darwin, and Anais are British, Scottish, or Irish voice actors doing UsefulNotes/AmericanAccents. Technically averted with Dan Russell (the voice of Richard, Mr. Fitzgerald[[note]]Penny's father; real name: Patrick as of "The Shell"[[/note]], the Red-Cube Coach, and Tina in the first season), and Sandra Searles Dickinson (the voice of Granny Jojo, Hector the giant's mother, the pink cupcake lady, Felicity, and in some episodes, the Band-Aid school nurse), who are American actors based in the UK. Similarly, numerous characters are voiced by Kerry Shale (Bobert the robot, Hector the giant, Leslie the flower, Larry the rock-head clerk, Sal Left Thumb, Harold[[note]]Tobias' father and Jackie's HenpeckedHusband[[/note]]; Alan the balloon and Idaho the potato in the first season), who is Canadian and currently living in London.
* FanNickname: Penny (back when she was in her shell) and the rest of her family are often called "doe-nuts" because they're peanuts and she has antlers.
* FlashbackWithTheOtherDarrin: A flashback in "The Name" redubs the scene from the first season episode "The Curse" where Gumball (who was voiced by Logan Grove at the time) is riding down the highway in a mop bucket shouting, "I'm gonna make it! I'm gonna make it!" with Jacob Hopkins' voice. The same goes for a flashback with Darwin in "The Extras" to the second season episode "The Sweaters" where Darwin's line "This is boring! This is ''so'' boring!" was done by Terrell Ransom, Jr. rather than Kwesi Boakye.
* InspirationForTheWork:
** Ben Bocquelet stated in the interview that the WorkingTitle ''Gumball'', which later became the main character's name, came from thinking of things a child would randomly have in his pocket.
** The episode "The Money", particularly the climax where [[spoiler:the Wattersons' lack of money causes the show's animation to get cruder and more low-budget until everyone--except Gumball--signs the contract]], [[http://imaginationstudios.cartoonnetwork.co.uk/video/my-favourite-gumball-episode-ben-bocquelet/ was inspired]] by the show's budget always running out by season's end.
* {{Jossed}}: "The Shell" revealed that Penny is actually a shapeshifting fairy. This pretty much blew away the popular fan theory that, because of her antlers, she was a deer under her shell.
* KeepCirculatingTheTapes: The UK is the only place where every episode of the show is uncut (though the version of "The Saint" where viewers actually see the photo of Darwin as Alan kissing Leslie the flower and Leslie enjoying it -- as opposed to a brief glimpse of it -- has yet to surface), so unless you live in the UK or have access to Cartoon Network's UK channel, there's really no legal way to see the uncut version of "The Skull" where Gumball, Darwin, and Clayton give themselves shock therapy to stop lying or the version of "The Storm" where Gumball tells Carmen that he's not a "cheap, corruptible bimbo" instead of a "cheap, corruptible coward." Even digital sources like Hulu Plus and [=iTunes=], which keep the full opening and end credits and have seasons one and two available, include the edits in the US version. However, the version of "The Crew" that ends with The Donut Sheriff tasering Marvin as Marvin tries to explain that he's unarmed is not much of a chore to find, as that episode is readily available on [=iTunes=] and Amazon Prime. It's even worse if you live in Asia, Australia, Latin America, Brazil, some parts of Eastern Europe, Turkey, or The Middle East as versions of ''Gumball'' episodes in those continents/countries are edited even further to remove anything considered violent, rude, or sexually suggestive.
* TheOtherDarrin:
** Gumball was voiced by Nicky Jones (aka WesternAnimation/{{Chowder}}) in the early reel version of the show while Darwin was voiced by Jake Pratt.
** Between seasons 1 and 2, many characters changed voices:
*** Lewis [=MacLeod=] left the show entirely, so his roles were recast between Steve Furst (Principal Brown), Hugo Harold-Harrison (Ms. Simian and Rocky Robinson), and Dan Russell (the Doughnut Sheriff).
*** Rupert Degas also left, and his roles were passed to Adam Long (Mr. Small), Max Cazier (Clayton), Hugo Harold-Harrison (Tobias, one of the Eggheads) and Stefan Ashton Frank (Gaylord Robinson).
*** Aurelie Charbonnier was the original voice of Sussie in the show's first season. From season two to the present, British comedian Fergus Craig replaced Charbonnier as Sussie's speaking voice (while Charbonnier's chin is still used as the character and Bocquelet still does Sussie's screaming and laughter).
*** A few others changed voice actor despite their original voice actor still playing other characters: Alan the balloon and Idaho the potato went from both being voiced by Kerry Shale to both being voiced by Hugo Harold-Harrison; Carmen the cactus went from being voiced by Teresa Gallagher to being voiced by Alix Wilton Regan; Tina Rex went from being voiced by Dan Russell to being voiced by Stefan Ashton Frank.
** Both Gumball and Darwin were recast in season three from Logan Grove and Kwesi Boakye to Jacob Hopkins and Terrell Ransom, Jr. respectively due to their original voice actors hitting puberty and sounding too old for their roles. The season three premiere "The Kids" is both a farewell to Grove and Boakye and an introduction to Hopkins and Ransom, Jr.
** In the third season, Rocky went from Hugo Harold-Harrison to Simon Lipkin and Jamie the bully went from Jessica [=MacDonald=] to Maria Teresa Creasey, even though Harold-Harrison and [=MacDonald=] still voice other characters.
** Almost all voices were recast in the Hungarian version after season 1, save Gumball, Darwin, Nicole, Anais and a few side characters. Season 3 changed even more voices, including Gumball's and Nicole's. Now Darwin, Anais, Banana Joe, and Penny are the only characters with their original voices.
* PropRecycling: As mentioned in the main page quote, a lot of the characters on the show are rejected advertising mascots Ben Bocquelet had in his portfolio that he didn't want to throw out or remodel in the hopes they get accepted.
* SeriesHiatus: Likely because of its multi-medium format increasing production time and how everyone on staff works to make sure every episode (regardless of whether or not viewers find it entertaining) is made with care, the first two seasons of ''Gumball'' took about one-and-a-half times as long to come out per episode as most cartoons of similar length, which is why there can be anywhere from three weeks to a couple of months between new episodes in the same season. By the third season, production apparently sped up, bringing it more in line with others shows on the same network.
* ShortRunInPeru: Several times the series has gone on [[SeriesHiatus an extended hiatus]] in the middle of a season, leading episodes to premiere in other countries before reaching U.S. and U.K. audiences:
** UK[[labelnote:*]]Given the show is made ''in'' the UK, but with the US as its primary audience, one could debate whether episodes premiering in the UK are examples of this trope or the only ones where this trope does ''not'' apply.[[/labelnote]]: "The Mystery", "The Microwave", The Meddler", "The Fight", "The Apprentice", "The Hug", "The Wicked", and "The Scam"
** Spain: "The Virus", "The Pony", "The Hero", "The Dream", "The Sidekick", "The Photo", and "The Storm"
** Middle East and North Africa (Arabic dub): the last nine episodes of season two (from "The Promise" to "The Finale"), "The Origins" (also premiered in the Netherlands on the same day)
** Chile: "The Oracle"
** Latin America: "The Safety" (which was shown with the original English dialogue and not dubbed in Spanish)
** Portugal (Portuguese dub): The last four episodes of season three ("The Downer", "The Egg", "The Triangle", and "The Money")
** Canada: "The Scam"
* TalkingToHimself:
** Hilariously, both Principal Brown and Ms. Simian were voiced by Lewis [=MacLeod=] in the first season, despite them being ''lovers''.
** Richard has had scenes where he talks to Mr. Fitzgerald (Penny's father), the Doughnut Sheriff (after season one), and the Ripley 2000 manager (the little, periwinkle teddy bear seen on "The Refund" and "The Question"), all of whom are voiced by Dan Russell.
* TroubledProduction: The show's production had a rather rocky start because very few of the crew members hired were experienced in doing TV. This resulted in major organizational restructurings and numerous delays that the show's creator is thankful for not getting in trouble for.
* TheWikiRule: [[http://theamazingworldofgumball.wikia.com The Amazing World of Gumball Wiki]]
* UnfinishedEpisode:
** Four episodes [[https://twitter.com/benbocquelet/status/247455074387886081 were scrapped]] in the first season: two were called "The Mom" and "The Pizza", the other two weren't named. The premise for the two named episodes [[https://twitter.com/benbocquelet/status/737000358283776001 may or may not]] have been reused for the season three episodes "The Mothers"[[note]]the episode where Gumball, Tobias, and Banana Joe pit their moms against each other to see who's the Superest Mom[[/note]] and "The Pizza"[[note]]the episode where Larry quits his jobs and the town plunges into apocalyptic chaos[[/note]].
** Season two had an episode planned called "The Rex" which would have fully introduced Tina's father and have been a parody of/homage to ''Jurassic Park''. [[https://twitter.com/benbocquelet/status/397840050152804352 It was cut because it would have gone over budget.]] Mr. Rex eventually ended up showing up in full anyway in the fourth season episode "The Routine".
* WhatCouldHaveBeen:
** Most of the characters of this show were originally going to be mascots for ads and company logos, but all of them were rejected. Penny, [[https://vimeo.com/68915551#t=30m40s for instance]], came from a commercial pitch to Nickelodeon and had ''a gun''. Rather than get rid of them or redesign and re-pitch them in the hopes they'd be accepted, Ben Bocquelet superimposed them on a photograph of a school and decided to create a TV series using those characters.
** In [[http://issuu.com/worldscreen/docs/tv_kids_mipcom_2013 an interview (page 127)]], Ben Bocquelet revealed the show was originally envisioned as being about rejected cartoon characters being sent to a remedial school so they can become normal enough to star in an animated series. Daniel Lennard, the Vice President of Cartoon Network's European division, [[https://vimeo.com/68915551#t=3m06s found the idea to be too depressing]] and was looking for family/kids' animated sitcoms, so Bocquelet turned the remedial school into an American junior high school and also added a focus on the main character's family. He also mentioned at one point hoping Creator/AdultSwim would be interested in some of his work, although, contrary to some claims, [[https://twitter.com/benbocquelet/status/557632076636499969 he never pitched Gumball itself to Adult Swim]] (and the claim that AdultSwim rejected the show for being "too cute" was actually attributed to the short-lived series ''The Problem Solverz'').
** The idea for Darwin's origin, a fish that grew legs, [[https://vimeo.com/68915551#t=16m40s originated in]] an earlier show pitch by Bocquelet about a village of [[OurCryptidsAreMoreMysterious cryptids]] that lived in the backyard of a little boy's house, but were isolated from the rest of the world.
** [[http://www.kidzcoolit.com/interviews/the-amazing-world-of-gumball-hag-cons-questions-for-creator-ben-bocquelet.php The show's name]] was originally planned to just be "Gumball" and not refer to any particular character. It was then decided to make that the main character's name, and from there the title expanded to ''The Amazing World of Gumball''.
** Gumball and Richard were [[https://vimeo.com/68915551#t=12m40s at first both thought up as blue dogs]], but they figured a family of cats and rabbits [[RuleOfCute would be cuter]]. Gumball was then going to be a black cat, [[CatStereotype because]] he's [[BornUnlucky very unlucky]], but it was decided this would limit the stories he could be involved in and make him visually indistinct. [[http://polyminthe.blogspot.com/2012/06/amazing-world-of-gumball-development.html Some early sketches of blue dog Richard and black cat Gumball]] have been posted.
** An "Early Reel" was made for the show as a pilot (and is available on YouTube as a one-minute animation test). The most noticeable differences are the fact Darwin was animated in CGI and Gumball had a square head, though other characters looked different too. Teri the paper bear was also a boy, there.
** The people in "The Sweaters" from Richwood High [[http://theamazingworldofgumball.wikia.com/wiki/The_Sweaters/Gallery#Miscellaneous were originally going to be]] {{Funny Animal}}s like everyone else, rather than stiffly animated 70s/80s-cartoon-style humans.
** Sarah G. Lato's name was originally going to be [[http://theamazingworldofgumball.wikia.com/wiki/File:GB200_DOLLY_ORIGINAL_PUPPET.jpg Dolly]].
** "The Downer" [[https://twitter.com/benbocquelet/status/578723490926370816 underwent a significant rewrite]] because the initial draft was considered too dark. Bocquelet [[ShrugOfGod refused to elaborate]] on how the first and final scripts differed, and, when asked for some storyboards, said that it was up to the storyboard artist to release that information. He would, however, later describe it as being "[[https://twitter.com/benbocquelet/status/618190542619459584 just lame]]".
** Sarah's comic in "The Comic" [[https://twitter.com/benbocquelet/status/652473799288467457 was originally conceived]] as a parody of Creator/RobLiefeld's style, but they liked the style the guest artist came up with better.
** [[https://www.reddit.com/r/gumball/comments/3o0rna/episode_discussion_the_romantic/cvtu66w It was planned at some point]] for Penny and Gumball to break up in a TwoPartEpisode, but this was abandoned in favor of the two staying together.
** Ben Bocquelet wanted Creator/StudioTRIGGER to animate the {{Art Shift}}ed segments in "The Fury", but they were too busy with their own projects, so Creator/Studio4C stepped in.
* WorkingTitle: The show was first planned to just be called ''Gumball'', but after deciding that would be the main character's name, it was lengthened to its final name. Some individual episodes also changed name mid-production:
** "The World"[[note]]season two episode where all the objects of Elmore come to life[[/note]] was at one point named "The Objects".
** "The Extras"[[note]]season three episode where the background and minor characters overtake the show[[/note]] was originally titled "The People"
** "The Fraud"[[note]]the one where Principal Brown is revealed to have a fake diploma[[/note]] was originally called "The Phoney"
** "The Void" [[note]]the one first featuring the dimension of the world's mistakes and the episode that brought back Molly the black sauropod after being gone since season one...and later, Rob the Cyclops after being gone since season two[[/note]] was originally called "The Hole".
** "The Boss" [[note]]the one where Rocky takes a job with Chanax, Inc so he can make his father proud[[/note]] was originally called "The Heart"[[note]]no word as to why it was changed, but it can be assumed that Mr. Robinson was originally going to have a heart attack instead of get so mad that his head split open and his stuffing fell out[[/note]].
** "The Question"[[note]]the one where Gumball and Darwin find the meaning of life after being one with the universe during a sugar rush[[/note]] was originally "The Answer".
** "The Origins"[[note]]the two-part episode showing how Gumball and Darwin first became brothers[[/note]] was originally "The Roots"[[note]]though "The Roots" is now going to be repurposed as the title of an upcoming episode where the Wattersons try to get into Darwin's culture after feeling that he knows nothing about it[[/note]].
* WriteWhatYouKnow:
** The turtle drying out in "The Puppy" when Darwin leaves him in the sun is based on how the pet turtle of the series creator died.
** The treasure hunt Gumball made for Penny in "The Romantic" [[https://www.reddit.com/r/gumball/comments/3o0rna/episode_discussion_the_romantic/cvtk72s is based on one Ben Bocquelet's friend made for his girlfriend]].
* WriteWhoYouKnow: Ben Bocquelet [[https://www.youtube.com/watch?feature=player_detailpage&v=Swxzs2NRpDI#t=130 has described]] Richard, Nicole, and Anais as caricatured versions of his family members that they're named after and Gumball as being based on his perception, as an adult, of what he was like as a kid[[labelnote:although]]Between different interviews, Bocquelet has expressed ambivalence as to how much Gumball is based on himself. In [[https://vimeo.com/68915551#t=8m30s one video]], Bocquelet said he considered Gumball more of a character, ''another'' staff member said Gumball reminded them of Ben often, and Bocquelet sheepishly emphasized that he's not ''that'' stupid.[[/labelnote]]. Darwin [[https://vimeo.com/68915551#t=15m45s was inspired by several childhood friends]] that spent so much time at Bocquelet's house that they felt like members of the family. [[http://www.kidzcoolit.com/interviews/the-amazing-world-of-gumball-hag-cons-questions-for-creator-ben-bocquelet.php One, named Paul]], was also bald and had a similar personality.

!!General Trivia:
* After the first season, Anais, Darwin, and Gumball has one, two, and three front teeth, respectively.
* The show's first season had no script, instead going from four page outlines straight to the storyboard. It was decided this put too large a workload on the storyboard artists, so the show has full scripts from the second season onward.
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