I'm curious about Themis.

He's clearly Elidibus, since he had Elidibus's voice actor in his voiced cutscene at the end of the MSQ's credits. Yet despite wearing the white robes of the Emissary, he doesn't have a red mask. But during the Elpis MSQ they alluded to the short story with Azem and the grapes, in which he was already Elidibus, so he should already be Elidibus here. Plus he already knows Azem. Is he undercover, explaining why he's using his real name and a white mask? But then why wear the white robes and not black?