Even wilder much-less-likely speculation: could the 8th character be alternate timeline Marika? Maybe another survivor of jar-sainthood (with maybe the name of Saint instead of Shaman)?
It's implied the other Spirit-Tuner that Hewg knew before training Roderika was Marika herself, which could mean any other Spirit Tuner character would be associated with either Marika or the Shaman Village. Or heck there could even be a version of the Lands of the Tower that never got crusaded and veiled.
But yeah! Lots of different places for the world arrangement to diverge. I'm imagining something similar to Zelda, not necessarily as clean cut or plotty as 'this alternate canon was caused by X specific

![[No Spoilers] I sketched Beau at C2E2 and got it signed by Marisha!](https://i.redd.it/76jeto1eeck41.jpg)


![[OC][Art] I was commissioned to draw this tough buff tiefling monk](https://i.redd.it/9vtck6s840v21.png)