Tatsuya

Tatsuya is a young man kept alive by Rose Quartz's healing powers, having once died before being resurrected by her. He is currently being transferred from the Elemental's Spaceship 2V7 to Spaceship 9Z5, alongside Ekanite, (and her component Gems Moonstone, nicknamed Deimos, and Citrine), Nephrite and Emerald. Nephrite is his caretaker, providing him with necessities when needed. He also works as both a scientist and a test subject for the aforementioned Elementals. He is often kept in isolation, and so doesn't know many of the others on either Spaceship. It is also unknown how he knew Rose Quartz, or what their relationship was.