Elhaym Van Houten (エレハイム・ヴァン・ホーテン, Erehaimu Van Hōten), nicknamed Elly (エリィ, Erii), is the young, skilled officer of the Solaris Military who is also the Antitype in this incarnation of Fei's life, just as she has been throughout the centuries on the planet (the Great Mother Sophia, Kim's wife Elly, etc.). Her parents are pure solarians. Her mother is a woman called Medena, and her father's hame is Eric, who works on the Imperial Guard.
Elly was created by the Wave Existence out of Abel's need for a mother. Elly was leading an operation to steal a top-secret experiment gear from the rival country Kislev, but was forced to crash-land in Lahan. Her encounter with Fei changes her life forever. Elly is an optimist and wants to help Fei, despite the fact that he is a LAMB, and she cannot leave the military. She is a competent fighter with her rods, but she has powerful elemental ether, which makes her valuable to the party.
Elly has one issue that remains with her, despite her being a Solarian and the daughter of one of the Empire's most decorated officers, there is the fact of her appearance, being red-haired and blue-violet eyed somewhat separates her from other Solarians who are mostly blond and blue-eyed. For a time, she thought her mother was not the woman her father married, and had actually been her childhood nanny who was a Lamb. This fact of her life was a mark of ridicule by some people of Solaris, including Elly's former comrade in the Elements, Dominia. It's only toward the midpoint of the game that Elly learns that this was how she looked ever since the dawn of life on their planet. Her love for Fei was once something she didn't understand until she realized that they were truly meant to be together, as they had been in their previous lives for the past ten thousand years (10,000 years). They consummated this love on the Yggdrasil, and they cherished it when they returned to Ignas to be with their friends. Elly's love for others and for Fei helped her move through the deaths of both her mother and father and helped her fight for her freedom when she was possessed by Miang in the Merkava.