Dirtyfur is Milkylavender and Barelygrey's sister. She was very young when her mother Flowerheart fled to the Moonrock when she couldn't take the stress of being part of the royal family any longer. Barelygrey helped raise her alongside Dirtyfur's father Whisper of Nights. After she grew up, her family told her the truth early on so they wouldn't have to deal with her being angry because they lied to her. Since then Dirtyfur has always been curious about her mother, but since she knows so little about Flowerheart she prefers to stay with the family she was used to.