Soul and Hiroki's adoptive daughter and Annabeth's "niece".
Sweet kid, but then Soul, Hiroki, and Annabeth are all kil.led and she becomes a sort of multiversal wild card, in some realities/ universes she manages to grow up much as she would have had they lived, in others she becomes pretty much consumed with grief and anger and sets out for revenge, eventually becoming a sort of mercenary because she doesn't know what else to do.