An energetic girl Luna and Neil meet in the third building. She's Luna's childhood friend, who grew up in the same orphanage as her. Selene is a famous outlaw and was friends with fellow thief Apollo. However, she plans to leave her old lifestyle behind and start a new, honest life. Despite Neil's initial mistrust of her, Selene admits she's been trapped in the building for three years and just wishes to spent time with Luna before she leaves.