Er

race: = UnknownEr - main antagonist of Seraphic Blue.

She is a dark being who is the ruler of Gaia Cancers and the one sends them into Gaia. Er is worshipped by Kursk family as "Voodoo Goddess". Throughout the game, she secretly gives orders to Ende and Kursks (offscreen), thus masterminding the events of the game. Er occasionally talks to Ofa about Gaia's destruction.

At the climax of the game, she tells to Vene that she was behind all terror in Gaia and becomes Refuse Seraphic Blue. She was defeated at the hands of Vene, who initiated Gaia's Rebirth.

Description
A most detailed and lovingly elaborated article about Er created by an Anonymous user(s), a big thanks to him(to them)

https://villains.fandom.com/wiki/Lord_Er