A note about the character roster:
There are dozens of characters planned for the roster: a core group of protagonists, a line-up of villains, and an assortment of wild-card characters. Which ones remain in tact, and which ones remain to be created, is anybody's guess.
On a similar note, the designs of the characters shown here could easily change up until they show up in the series. While Araki does have a habit of allowing his characters to morph throughout a series, I'm going to try my best to keep them as set as possible, once they're in the story.