Yes. This is actually happening now.
You can pick one of the series' characters, or you can make your own OC.
In the bio you must include the following: Name, Age, Gender, Physical Appearance, Personality, Backstory, Stand + Abilities
There are some rules:
1. No being mean to anybody.
2. If you make an OC, don't make your stand overpowered. If you do, then I will not allow you to play.
3. The most important rule of all, HAVE FUN!