Apophis by Draconis
(fanfic) Apophis was the titanic monster with the task of rule over Africa during the Sumerian gods dominion.
He was imprisoned in the Tartaros as well, but was free in the Osiris age somehow, and then, in the next era, he found a way to corrupt Ra's priest, Isis.
Making her betraying Ra; by offering his power to her son. And that's how the crimson Kalasiri of Typhoeus was made.