Diana Graham

Steampunk theme, with brassy metal cogs and mechanisms. Only saw a partial transformation, where she manifested one glove.

Described as the most powerful member of her group by Tsuruya Yuki. Her parents emigrated to Japan when she was young.

She was immediately interested in acquiring a Clear Seed from Sabrina, but her team leader shot her down. In the end, a compromise was reached, where Sabrina "partially cleansed" three grief seeds (to the level of 8 normal seeds each) instead.

She's able to create a "blacker than black" sphere of void between her hands, and used it to teleport grief seeds to her from the locations of two of her group's other members. Her full powers are unknown.