I have said in my first chapter that there will be worlds that Oscar and Qrow interact with one another in Universes where their deeds play important roles. Here is what I got so far.

1) Star Wars.

Qrow-Anakin Skywalker/Darth Vader

Oscar Pine-Darth Maul.

In Legends, the two Sith Lords meet and duke it out with sabers. I think we were robbed from that in Star Wars Rebels.

2) DC

Qrow as Batman

Oscar as Superman and Red Hood in Under the Red Hood. Plus as the Joker in the Dark Knight Trilogy.

3) Pirates of the Caribbean

Oscar as Captain Jack Sparrow

Qrow as Davy Jones.

3)Marvel

Oscar as the Hulk and Qrow as Iron Man. And then have Oscar as Daredevil and Qrow as the Punisher.

4) What just came to mind recently:

Halloween and Friday the 13th crossover. Qrow Branwen is Michael Myers and Oscar Pine as Jason Vahoores.

I'm thinking of having my Mandalorian-Rosegarden AU cross paths with the Predator-Snowbird AU.