Four has blue eyes and long brown hair tied in the back as two ponytails, with a small "IV" on her forehead. She wears a green uniform on top of a long tan gown. Her right hand is covered by a long brown glove while her left is a large metallic claw with sharp spikes on the fingers, which is her weapon of choice. Her legs are covered with long stockings, blue and white socks, and leathery boots. Tied around her shoulders is a large green coat.