Eliza and Camille are brothers, Eliza was once a Bunnian amazon but a terrible wound on the stomach threatened to end her life, Camille desperately tried everything and eventually was able to bound her sister's soul to a polished Ether crystal, Camille then planted the crystal on his personal steam armor, since then her sister essence inhabits the armor, that Camille jealousy protects.

Because of his actions many consider Camille is demented and what he did is a abomination, because of this he was forced to leave Twin Citadels and he and Eliza are currently wandering around the world making research and offering his services as a mercenary to earn the resources he needs.

Together they fight in complete synchrony while Camille controls the weapon systems of the steam armor, Eliza focuses on hand to hand combat, also Eliza is equipped with a prototype steam engine Camille calls the Helix Engine.