Rikka Hiiragi (柊 りっか, Hiiragi Rikka) is an anime-only character who appeared in Shugo Chara!! Dokki Doki. She is a Guardian Apprentice, along with Hikaru Ichinomiya, and they both transferred to Seiyo Academy. As of the end of Shugo Chara! Party!, she is the new Queen's Chair of the third generation of Guardians.