Cyberdoll Lena (Cyber Doll Type Cf-335L-JPA) was the "child" cyberdoll (9 years old) who was sent to get May back. But she quickly took a liking to Ikariya, and she decided to stay. Since it would be a problem to have Lena living with Kazuya, Kasumi let her stay in her room. Lena's date of creation was March 3rd.

[Lena first appeared in episode 3]

Lena's voice is done by Kugimiya Rie.