Artist. This image, created by him, is used as the avatar of Uzuki (Cookie).
Japanese name: きりの そーや (Kirino Souya)
The other names: 霧野 蒼也 (Kirino Souya), 蒼也 (ソウヤ, Souya), きりの (Kirino) or 踊るミトコンドリア (Odoru Mitochondria)
Site & circle name: 夢の影 (Yume no Kage)