A storyline could involve Venom being an anti - hero who has his own goals but crosses paths with the Avengers. They initially fight, but then find out that they are both after the same powerful artifact that could destroy the world if in the wrong hands. So they join forces to retrieve and safeguard it.
There could be a fanfiction storyline where Venom's host has a personal connection to one of the Avengers. For example, if the host was a former SHIELD agent. This connection could lead to Venom getting involved in an Avengers - related conflict. Maybe the Avengers are trying to stop a global conspiracy and Venom's host's knowledge from his SHIELD days helps the Avengers, while Venom provides the muscle to fight off the bad guys.
One possible storyline could be that Venom is lured to Earth by a powerful villain who wants to use Venom to take on the Avengers. But Venom realizes he's being used and teams up with the Avengers to take down the real villain.
Another storyline could be Gohan searching for a way back to his own universe. In this journey, he teams up with a group of smugglers who are on the run from the Empire. Along the way, he discovers secrets about the Force that are unique to the Star Wars universe and has to decide whether to share this knowledge with his own universe if he ever gets back.
There are numerous storylines that could come out of Loki joining the Avengers in fanfiction. For instance, Loki could have a redemption arc where he gradually becomes a true hero in the eyes of the Avengers. Or there could be a storyline where Loki's past catches up with him and the Avengers have to decide whether to stand by him or not. Also, a fun storyline could be Loki teaching some of the Avengers his magic tricks, which could lead to some comical and also useful situations in battles. He could also introduce the Avengers to some Asgardian customs and technology that they've never seen before, opening up new possibilities for the team.
Well, Venom could be a huge threat to the Avengers. His strength and his alien nature might give them a really tough time. Maybe he'd target specific Avengers like Spider - Man if he was part of the group, since Venom has a history with him.
One possible storyline could be Venom getting involved in an Avengers mission. Maybe Venom's unique abilities like his symbiotic powers and super strength could be used to help the Avengers against a common enemy. For example, against a powerful alien threat that the Avengers alone can't handle. Venom's ability to blend into the shadows and his near - indestructibility could give the Avengers an edge in battle.
In some fanfictions, Venom could be integrated by having a symbiote-infected character join the Avengers. Maybe a character like Spider - Man, who has a history with Venom in the comics, brings the symbiote's knowledge and power to the team. This could create new conflicts within the team as they deal with the more violent and unpredictable nature of the symbiote.
One storyline could be that Sasuke is a fallen Jedi and Sakura is sent to find him. She has to face many challenges in the galaxy to reach him and then convince him to return to the light side. Another could be that they are both on opposite sides of a galactic war. Sasuke is with the evil empire - like the Sith - and Sakura is with the rebels. They have to fight each other but also deal with their feelings.
One storyline could be Gohan trying to find a way back to his own universe while helping the heroes in MHA. Another could be Gohan teaching Izuku Midoriya some of his more advanced combat techniques.
Well, one possibility could be that Venom, being an anti - hero, is initially seen as a threat by the Avengers. But then they realize that there's a greater enemy that they both need to face. Maybe an alien force that is immune to the Avengers' usual attacks but Venom's symbiotic abilities can somehow counter. So, they reluctantly team up, with Venom constantly trying to assert his own way of doing things, leading to some interesting clashes and character development within the team - up.
One possible storyline could be that Naruto is somehow transported to the Young Justice universe and meets Black Canary. They initially have a misunderstanding due to their different backgrounds, but then they realize they have a common enemy. Another storyline could be that Black Canary is investigating a strange phenomenon and discovers Naruto's world. She teams up with Naruto to solve a problem that affects both their worlds. Maybe a powerful villain is trying to merge their two universes in a chaotic way, and they have to stop it.
Well, it could be that Naruto is dealing with a big threat in his own world, like a new Akatsuki plot. And in the midst of all this, Venom arrives. But Naruto, being preoccupied with protecting his friends and the village from the Akatsuki, doesn't give Venom any attention. Venom, being a symbiote used to being a big deal, decides to prove its worth by challenging Naruto's enemies on its own, which creates a whole new dynamic in the story. Maybe it even forms an unexpected alliance with some of Naruto's foes who also feel neglected by Naruto's focus on the main threats.