A relative character of mystery who will serve mainly as a 'narrator' of sorts as the series goes on. But all plans for this character still remain a mystery, but it has been known that her importance is paramount to the series, even going as far as having a small portion of her logo from Smash being implemented into the new logo for the show.  

For her voice think someone who is in constant state of pain and existential dread with hint of regret, but she's trying to compose herself despite everything that happening around her.