Rikka Takarada (宝多六花 Takarada Rikka) is Yuta Hibiki's friend and one of the lead supporting characters in SSSS.GRIDMAN. Despite being apprehensive about Gridman Alliance at first, she develops a strong determination to help Yuta fight Kaiju in order to protect her loved ones.
Along with Tsukuyomi and Princess Shayla, Rikka made a first appearance to rescue Sento Kiryu and the gang from being caught by the police. Rikka is later seen waiting for Luigi and his friends outside a food stall. She then proceeds to befriend Milinda and her friends, to which Luigi and Sento get upset. Rikka ignores them and proceeds to lead them to Princess Shayla's House Lair, where she is treating the woman who was injured. When Sento asks Shayla whether treating humans is uncomfortable, Rikka hits him and tells him off for it, but Princess Shayla chastises him gently. She then sits quietly until Luigi, who is surprised that Tamayo had turned Rikka into a superhuman, asks for Shayla's age, to which she reacts again. She reprimands the heroes again, more severely this time, and she then sits quietly.
She is the first to notice Tsunayoshi Sawada and his fellow villains. when they attack the house and protectively covers Shayla and her friends when Sochie breaks through the roof. However, her body gets blasted off right after she realizes that the demons are Dark Lugiel's underlings. While Luigi fights the three, Shayla and her friends hold her body as Rikka regenerates her body with the help of Gridman. Rikka and Tsukuyomi begin yelling about how the more people are hidden under Dark Lugiel's influence, the harder it is to hide. She and Tsukuyomi also yell about how he hates it when his time with Princess Shayla is interrupted.
Allies and enemies
Allies: Gridman, Tsukuyomi (Kamen Rider), Princess Shayla, Sento Kiryu/Kamen Rider Build, Milinda Brantini, Luigi Latorre, Yugi Muto/Yami Yugi (Atem), Joey Wheeler, Tristan Taylor, Téa Gardner, Aichi Sendou, Ruko Kominato, Dan Bashin, Gao Mikado