Zelica

Not much is known about Zelica beyond Mithyn's mention of her to the Mystery Divine Being during the Chapter 3 prologue. We do know what she is somehow quite powerful, at least on the level as Mithyn and the Mystery Divine Being themselves, and that she has been captured by someone.

The Entity says that Zelica spoke "words of comfort" to her in the abyss, but later could not be heard.

In Chapter 5, Tertia says Zelica is older than the sisters Mithyn and Ivala, as well as much older than The Mother but younger than her.