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Elysia

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Elysia is the co-leader of The Thirteen Flame-Chasers. She is ranked second amongst the thirteen. Her codename is "Ego".
Elysia is an elegant, cheerful, and sweet lady who's described as someone who "enjoys everything". She likes to flatter Mei for her looks and constantly praises Eden's beauty. Elysia enjoys interacting with people and is very good at it.
Information within the Elysian Realm makes it apparent that Elysia is close with Kevin Kaslana. She knows about Kevin being "The Prince" in high school, too. In fact, she knows Kevin so well that even Dr. MEI herself asked Kevin how he met her. It is later revealed that she tried to find and meet him by disguising as a maid at a Tradition Night celebration, spurred on by him beating her score in training and the rumor of him joining because of MEI.
She rarely speaks badly about anybody, and even then, she would say it in the lightest way possible. She is a friendly presence, and attempts to make the trial a welcome place for Mei. She is light-hearted enough to joke occasionally.
Despite this friendly appearance, Elysia also keeps a mysterious distance. Eden states that Elysia rarely lied to anyone, but keeps a number of secrets to herself. Mobius, on the other hand, says that Elysia is a traitor.