Rule #1: Team RWBY and JNPR can barely see stands

Rule #2: It also includes stand and the stand user(Like DIO being a vampire with "The World" or Mikitaka being an "alien").

Rule #3: The arena would be either where the stands were first introduced or at The Vytal Festival or at a random place after the events of JoJo or RWBY.

Rule #4: JoJo characters, RWBY, and JNPR act like who they are as characters. (RWBY and JNPR uniform is from volume 3).

Rule #5 JoJo characters, RWBY, and JNPR are trying to knock them out. But for some JoJo characters are gonna try to kill for reasons.

Rule #6: Jaune has his semblance and Ren has his new semblance.

Rule #7: RWBY and JNPR are allowed to hit stands.

Rule #8: RWBY and JNPR have their experience from throughout the Volumes. So even though some of the chapters have RWBY and JNPR at Beacon, it still counts that they have their feats from the later volumes to the earlier volumes.

Rule #9: Not all stands are gonna be here. (Like holly's stand and Jonathan's stand)

Rule #10: The winners win by either death, knocking the JoJo character (or characters or RWBY and JNPR) out, or they give up.

And that'll be it. The stands are gonna be in chronological order in which they appear in JJBA. I am not gonna give an analysis but if you'll want me to then comment below.