Experiment 290 is a younger looking boy, who, like Kindred Hubsher, has an artificial Eidolon, Emeralger, as a partner. He was implanted with a green gem in his chest at a young age, and was then trained mercilessly by LINKS to become an agent of Rheqo.

Eventually getting redeemed by Crossed Bonds, he joins the side of Tirsolar and picks the name Shiro, for his white hair. Shiro has been a good ally, and a source of some knowledge about Rheqo, and hopes to be of more use in the future to make up for his mistakes.