[quote=@Billsomething]
Would it be okay if my oc was from a fandom
[/quote]

No, sorry about that.

[quote=@Gambit]
Sounds like this will be fun! Quick question though, how many characters can we have?
[/quote]

There are no limits, per se, but ideally you should be able to write for all of them with sufficient depth and attention to their interactions.