Randomly Nameless
Member
It's Paula Tiso as both Camillia and Orochi. She just kind of sounds like that. They make it pretty clear Orochi is one of the "old" characters and it seems like Camillia is in the upper tier of ages too, but yeah.
Tiso played Lulu in FFX and the character is 21. This is 15 years ago (Jesus Christ), but yeah, she's always had that voice that makes her characters sound older than what the fiction itself claims.
Wow I totally recognized that Camilla's voice actor was Lulu! I just recently played FFX before Fates came out so Camilla's voice was strikingly familiar.