In a more extreme scenario, Deadpool could end up in Arkham Asylum and think it's a new kind of S.H.I.E.L.D. facility. He'd start interacting with the inmates there, and Batman would have to step in to deal with the chaos Deadpool is causing. Deadpool would see Batman as this dark and brooding figure and keep trying to get him to lighten up.
Deadpool has made a few crossovers to DC Comics. These crossovers tend to be special one-offs that combine the humor and action of Deadpool with the established DC characters and settings. They can be quite exciting for fans of both franchises.
Maybe Deadpool could team up with Harley Quinn. Their personalities are both wild and unpredictable. They could go on a rampage through Gotham, with Deadpool constantly breaking the fourth wall and Harley just being her crazy self, driving the Batfamily nuts as they try to figure out how to deal with this odd couple.
Another idea is a crossover where Deadpool is hired by Lex Luthor to take down Superman. But of course, Deadpool being Deadpool, he ends up befriending Superman instead. He could constantly annoy Superman with his non - stop chatter and crazy stunts, but also help him in unexpected ways, like using his regenerative abilities to protect civilians during a big battle.
Wonder Woman is another great choice. Her strong moral code and powerful abilities would be an interesting counterpoint to Deadpool. He might be in awe of her at first, and then start trying to crack jokes and get on her nerves, but they could also form an unlikely friendship as they fight together against a common enemy.
Another idea is that Greninja gets exposed to some kind of meta - human - creating substance in the DC universe and gains new powers. It could then join the Teen Titans, sharing its unique Pokémon abilities with the group. It would be interesting to see how Greninja interacts with characters like Robin, Starfire, and Cyborg, and how it uses its powers in battles against the Titans' enemies.
Well, one possibility could be Deadpool driving the Avengers crazy with his non - stop chatter and crazy antics. He might constantly break the fourth wall in the middle of a mission, making the Avengers wonder what on earth he's talking about. For example, he could start making jokes about how Captain America's suit is so old - fashioned compared to his own while they're in the middle of a fight against a powerful villain.
One great 'deadpool crossover fanfiction' is the one where he crosses over with Spider - Man. It's really interesting to see how Deadpool's chaotic nature interacts with Spider - Man's sense of responsibility.
First, understand the characters well. For Deadpool, his sense of humor, his fourth - wall - breaking nature are key. Then, think of a unique crossover. Maybe Deadpool in a world full of fairytale characters. Also, keep the plot moving and full of surprises.