Celty Sturluson (セルティ ストゥルルソン, Seruti Sutoruruson)
Also known as "The Black Rider" or "The Headless Rider", she is a Dullahan from Ireland who came to Japan looking for her stolen head. Her motorcycle is actually a horse in disguise, which she has named Shooter . She has no heart and perceives via unknown sensors that are not located on the head. The physical strength she possesses is above human, though not quite on par with Shizuo Heiwajima and Simon Berzhnev. She is also capable of manipulating a shadow-like, durable substance to form objects ranging from gloves to chariots at her will.
Currently her head is in Izaya Orihara's possession.
Celty lives with Shinra Kishitani and works as an underground transporter. She wears a helmet when she goes out and communicates via a PDA. She enjoys online chatting, television and DVDs.
Celty is afraid of Aliens, or 'Little Green Men,' as explained in Episode 12.5, and she does anything to learn more about them, 'To be ready when they invade."
In Episode 14, it now explains that Celty is in love with Shinra, and wouldn't allow for any other Dullahans to steal him from her. It's also known that Celty's head was given to Yagiri pharmaceutical company by Shinra's father, Shingen. Back then in Ireland, Shingen used the demon blade "Saika" to separate the soul that connects Celty's head from her body.