* 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.
* DawsonCasting: Aside from the Watterson children, kids in the show are played by adults.
* {{Defictionalization}}: [[Website/YouTube Elmore]] [[FictionalCounterpart Stream]] is now real... [[http://www.youtube.com/user/ElmoreStream sorta]].
* FakeAmerican: Teresa Gallagher, Nicole's voice actress, is British.
** Really, it seems most of the adult cast are Brits doing AmericanAccents.
** Technically averted with Sandra Dickson, who is an American based in the UK.
* HeyItsThatVoice: Anais is [[WesternAnimation/AdventureTime Me-Mow]].
** In Japan, Gumball is reportedly Creator/JunkoTakeuchi, a.k.a. [[Manga/{{Naruto}} Naruto Uzumaki]].
** Granny [=JoJo=] is [[Series/TheHitchhikersGuideToTheGalaxy Trillian]]
** Creator/BrianBlessed is [[ChristmasEpisode Santa Claus]].
** In France, Richard (Papa) is [[WesternAnimation/RegularShow Benson, Muscle Man]], [[Manga/{{Naruto}} Gaara]], and [[WesternAnimation/TotalDrama Trent]].
** In Brazil and Poland, Nicole is [[WesternAnimation/JusticeLeague Wonder Woman]].
*** Interestingly, the Brazilian Nicole and Richard have mentored [[Series/{{Glee}} Rachel Berry]]; Richard used to be Rachel's high school teacher, whereas Nicole is her current dance instructor. [[note]]Nicole didn't date Finn Hudson.[[/note]]
* TheOtherDarrin:
** Gumball was voiced by Nicky Jones (aka WesternAnimation/{{Chowder}}) in the pilot.
** In the first season Mr. Small, Tobias, Banana Joe, and Alan were all played by Rupert Degas and Ms. Simian was Sandra Searles Dickinson, while in the second season these roles were all taken over by Hugo Harold-Harrison.
** Both Gumball and Darwin have been re-cast for Season 3 due to their voice actors hitting puberty.
** In season 1, Sussie was portrayed by the creator's girlfriend Aurelie Charbonnier but in season 2 she is replaced by British comedian Fergus Craig.
* PropRecycling: A lot of the characters are rejected advertising mascots.
* ShortRunInPeru: Several episodes have aired first in Brazil (Portuguese dub), France, Spain, Central and South America (still in English), and Australia.
* TalkingToHimself: Most of the dozen plus named students in Elmore Junior High are voiced by a few people, so this happens a lot. In particular, every non-adult female but Anais, Tina, and Sussie is voiced by Jessica [=McDonald=].
* TheWikiRule: [[http://theamazingworldofgumball.wikia.com The Amazing World of Gumball Wiki]]
* WhatCouldHaveBeen: The original pitch for the show was in an "Early Reel". 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 was also a boy originally.
** [[http://polyminthe.blogspot.com/2012/06/amazing-world-of-gumball-development.html At some point in development]] Richard was a skinny blue dog while Gumball was a black cat instead of a blue one.
** In [[http://issuu.com/worldscreen/docs/tv_kids_mipcom_2013 an interview (page 127)]], Ben Bocquelet revealed that the show's original premise centered on rejected cartoon characters in a remedial school that helps them be normal. The idea was rejected as CartoonNetwork found it "too depressing."
** The people in "The Sweaters" from Richwood High were originally going to be {{Funny Animal}}s like everyone else, rather than 70s/80s-cartoon-style humans.
** Sarah the Ice Cream's original name was going to be Dolly.
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