Well, you could do a 'cartoon network war fanfiction' where the Teen Titans face off against the forces of the Red Guy from Cow and Chicken. The Red Guy could be trying to spread chaos across all the Cartoon Network universes, and the Teen Titans are the only ones powerful enough to stop him. They'd have to use their unique powers and teamwork to defeat his wacky and unpredictable attacks.
One idea could be a war between the Powerpuff Girls and the villains from Dexter's Laboratory. Maybe Mandark teams up with Mojo Jojo to create a super - weapon, and the Powerpuff Girls have to use all their strength and wits to stop them. Another idea is a war in the world of Adventure Time, where the Ice King tries to take over all the kingdoms in Ooo with an army of his ice minions. Finn and Jake would then lead a resistance against him.
One idea could be to have the heroes from Cartoon Network shows like Ben 10 and the Powerpuff Girls team up to fight against the forces similar to those in Infinity War. Ben could use his various alien forms to take on different challenges, while the Powerpuff Girls use their superpowers. They could also meet some of the Marvel characters and have some comical yet action - packed interactions.
One idea could be to have the cartoon versions of the heroes and villains swap powers. For example, Iron Man could end up with Thor's lightning powers and Loki could have access to Captain America's super - soldier strength. This would lead to really unique battles and character development as they struggle to control new abilities.
The Time Squad could be on a mission to prevent a powerful magical artifact from Fairy Tail's past from being stolen in the present. They enlist the help of the Fairy Tail guild members who are experts in magic and know the history of the artifact. Together, they have to face off against a group of thieves who are also after the artifact for their own evil purposes.
Well, you could write a fanfiction about Naruto and his friends having to face an ancient evil that was sealed away long ago but has now been released. Or perhaps a story in which Naruto has to deal with the consequences of a jutsu gone wrong that affects the entire Hidden Leaf Village. You could also explore a fanfiction where Naruto teams up with some of the villains from the series and tries to understand their motives.
Another great Funny Cartoon Network Tumblr story could be related to the crossovers that fans dream of. Fans might post about how cool it would be if the characters from 'Ben 10' could team up with the ones from 'Steven Universe'. They would draw fan art or write short stories imagining the interactions between Ben's alien forms and Steven's gem powers, like Ben turning into an alien that can withstand the heat of a gem weapon and helping Steven in a battle.
Begin by brainstorming different scenarios. Maybe there's a threat from an outside force that unites some Cartoon Network characters against it, or perhaps there's an internal conflict among them. Decide on the setting, whether it's a shared Cartoon Network universe or a specific location from one of the shows. Outline the main characters' personalities and how they'll change or develop during the war. After that, start writing the first chapter with an exciting opening scene to draw readers in.
Well, it would be much more light - hearted in many ways. The Cartoon Network characters have a different style of humor and action compared to the serious and often dark tone of the original Infinity War. For instance, the Powerpuff Girls would bring a sense of girl - power and sassy dialogue, which is quite different from the brooding heroes in Marvel's Infinity War.
Perhaps a story where the cartoon all - stars are invited to a grand party in a different dimension. But things go wrong when a mysterious figure starts causing chaos at the party. They then have to work together to figure out who it is and stop them. This could involve a lot of comical misunderstandings and cool team - up moments.
A cool concept would be a crossover with 'Avatar: The Last Airbender'. Picture the Total Drama contestants in the four nations. Some might try to learn bending skills, like Duncan thinking he can be a great earthbender because of his tough - guy attitude. They could also get caught up in the Fire Nation's plots or help Aang in his journey to master all four elements. This would bring a whole new level of chaos and humor to both universes.
You could also focus on the cultural impact of the spoils. If a society gets a lot of art or knowledge from the spoils of war, how does it change their own culture? It could lead to a fusion of different cultures or cause internal strife as some resist the new influences.