A crossover event between Marvel and DC is reportedly underway, with various outlets revealing details and covers for a "Deadpool/Batman" or "Batman/Deadpool" comic. The story may feature additional crossovers between characters from the two universes, including Nightwing and Wolverine, and Harley Quinn and Hulk. However, there is some uncertainty about the specific titles and pairings involved, with some outlets mentioning a "Spider-Man/Superman" crossover as well.