Celty Sturluson is a Dullahan from Irish folklore who resides in Ikebukuro, Tokyo, in the anime series Durarara!!. Known as 'The Black Rider' or 'The Headless Rider,' she is a mythical being who lost her head and is searching for it. Celty communicates through a PDA due to her lack of a head and wears a distinctive black helmet and motorcycle suit. She serves as a courier and is deeply intertwined with the supernatural and urban myth arcs of the series, often bringing a sense of mystery and intrigue to the storyline.