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.
Gumball and Jotaro would be really interesting. Gumball's energetic and goofy nature would contrast greatly with Jotaro's cool and stoic demeanor. They could learn a lot from each other, like Gumball could teach Jotaro to have a bit more fun, while Jotaro could show Gumball how to be more serious when the situation demands it.
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 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.
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.
The Powerpuff Girls would be great characters to include. Blossom, Bubbles, and Buttercup could bring their superpowers to Elmore. They could team up with Gumball to stop a super - villain that's causing chaos in both Townsville and Elmore. Their different personalities would create a lot of fun interactions with Gumball and his friends.
Definitely Penny. She could bring her unique charm and abilities to the crossover. In a crossover with 'My Little Pony', for instance, she could interact with the ponies in a really interesting way, maybe teaching them about her world while also learning about friendship in Equestria.
Well, it could be about the JoJo characters getting transported into the Warframe universe. They might team up with the Tenno to fight against common enemies like the Infested. For example, Jotaro could use Star Platinum's power along with a Warframe's abilities to take on hordes of foes.
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.
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.
I'm not entirely sure specifically what that particular fanfic is about as there could be a wide variety of interpretations. It might involve some unique and strange adventures within the world of 'The Amazing World of Gumball' related to potty humor perhaps, but without reading it, it's hard to say for certain.