When Two Universes Meet (Marvel x DC Crossover)

When two superhero teams meet by chance...
Do they become friends? Or enemies?
But when a great evil joins forces with the evils they fight, what would happen?

Has my OCs inside. Yes, there's more than one. :D I don't own everyone else except Katiya, Harper, Braelynn, Avery, and a villain OC whose name I will not be sharing here (for surprise effect); the others belong to their respective owners. Hope all of you like it. I also don't own the picture in the cover.

Pairings:
Married Couples and/or engaged: Bruce Wayne x Selina Kyle
Tony Stark x Pepper Potts
Clark Kent x Lois Lane
Diana Prince x Steve Trevor
Dating/former lovers: Dick Grayson x Barbara Gordon
Tim Drake x Stephanie Brown
Dick Grayson x Koriand'r (broke up)
Family relations (biological/adopted): Peter Quill x OC (Braelynn Quill) [maternal cousin for Peter, paternal cousin for OC)
OC x OC (Katiya Antonova x Avery Antonov) [siblings]
Bat family (Bruce Wayne, Selina Kyle, Alfred Pennyworth, Dick Grayson, Jason Todd, Tim Drake, Damian Wayne)
Stark family (Tony Stark, Pepper Potts, Peter Parker, Katiya Antonova, Morgan Stark)
Best friends/partners-in-crime: Damian Wayne x Jon Kent
Natasha Romanoff x Clint Barton x OC (Katiya Antonova)