One plot idea could be that Gumball loses his braces and has to go on a wild adventure to find them before his next orthodontist appointment. Maybe they got accidentally mixed up with Darwin's fishbowl accessories and are now at the bottom of the ocean.
Perhaps there's a plot where an evil dentist in the Amazing World of Gumball tries to steal Gumball's braces for some strange reason. Gumball, with the help of his family and friends, has to outwit the dentist and keep his braces safe. They could go through a maze - like dental office filled with all sorts of crazy dental instruments as obstacles.
An interesting character interaction could be between Gumball and the school bully. The bully could make fun of Gumball's braces, but Gumball uses his quick wit and the braces as a sort of weapon. For example, he could shine the braces in the bully's eyes to temporarily blind him and make his escape. This would show Gumball's resourcefulness and also how the braces can be an unexpected asset.
One idea could be an OC who has the ability to time - travel and they use it to prevent a major disaster in Elmore. Another could be an OC that is a new student at school and has a unique power that challenges the status quo among the main characters. Maybe an OC that is a magical creature trying to blend in with the normal residents of Elmore.
A crossover with 'Steven Universe' would also be cool. Gumball and Steven could bond over their unique family situations. They could have to use the power of friendship, Gumball's wacky schemes, and Steven's gem powers to defeat a common enemy, like an evil gem who wants to turn Elmore into a gem colony.
One idea could be that Gumball and his friends find a way to communicate with the zombies and try to co - exist. Maybe they discover that the zombies are not as mindless as they seem and have their own stories.
Well, they could be part of a mystery where strange things are happening around Elmore. Gumball, with his typical comical and curious nature, teams up with Carrie. They start to investigate and find out that it's related to an ancient curse. Along the way, they learn more about each other's worlds and grow closer as friends while trying to break the curse.
The Void could be a place where time doesn't exist in the normal sense. Gumball and his family get separated and they each experience different slices of time from Elmore's past, present, and future. They must reunite and figure out how to escape this time - warped Void.
A lemon fanfic could also focus on a character's backstory that has never been fully explored in the show. For instance, we could learn more about Darwin's life before he was adopted by the Watterson family. This could add depth and new perspectives to the character and the overall 'Amazing World of Gumball' universe.
One idea could be a crossover with 'Adventure Time'. Gumball and Finn could go on a wild adventure together, facing challenges in a mixed - up world of both shows. Maybe they have to find a magical item that got lost between their universes.
Since it's a fanfic based on 'The Amazing World of Gumball', there might be some new and unique characters added to the mix. For example, there could be a character who is constantly in search of the perfect bathroom experience and drags the other characters along on their quest. Or there could be a villain whose evil plan involves messing with the town's plumbing system, creating all sorts of potty - related chaos for the Gumball characters to deal with.
One possible plot could be that Gumball and his family somehow get transported to the JJBA universe. They might meet the Stardust Crusaders and initially be mistaken for stand users due to their zany and unique abilities. Gumball's shape - shifting ability could be seen as a stand - like power. They could then team up to fight a common enemy, like a new villain that threatens both their worlds.