How many distinct identities / forms can you get on a PC?

[Reksew_Trebla]

So I want the identities to be clearly different, so having a mechanical application beyond the Disguise skill. Also, I don't want any magic (items or spells) that could have a theoretically infinite number of distinct identities.

Also, they don't necessarily need protection from Divination effects, so they don't have to have the protection of Vigilante's Dual Identity.

So to give an idea of what I would consider unique identities, here are some examples:

Carl the "Human" and Billy Bob the "Werewolf". He in actuality is a Skinwalker, who tries to keep his "Human" and "Werewolf" identities separate.

If you give him levels in Vigilante, you now have:

Carl the "Human" (Social Identity), Billy Bob the "Werewolf" (same Social Identity as Carl for Divination), Nightman the "Human" (Vigilante Identity), and Vicious Wolf the "Werewolf" (same Vigilante Identity as Nightman for Divination).

What are my options for expanding this? I want to blindside a group of friends by having them meet all the identities separately, only to discover it was all Carl* all along.

*Carl is just a placeholder name. I kinda want to name the character Dio, because of the meme, but I haven't actually watched JoJo's Bizare Adventure yet, so I probably wouldn't do it justice.

[Mysterious Stranger]

The only class that has a distinct identity outside using disguise is the vigilantly. If divinations are not of any concern any character with a good enough disguise skill can have an unlimited number of identities. It may take some work to establish them, and this would be up to the GM establish what is needed.

A 17th level vigilantly with the Any Guise talent can have an unlimited number of identities. The earlier talents in this chain give you more limited options when you take them leading up to this.

[DeathlessOne]

The Master Chymist mutagenic form ability will help you there, but kind of shoe-horns you into several levels of alchemist.

[VoodistMonk]

There are several archetypes that are designed for members of secret organizations like Guild Agent Rogues and Hatharat Agent Bards. You also have the Celebrity/Demagogue Bard's fame profile you can exploit.