Ririka is a woman of average height and weight. She has brown hair that is usually tied back. She wears a light green dress over a dark green shirt.
Romance Dawn Arc
After Monkey D. Luffy punched Helmeppo, Ririka ordered her daughter to get inside and get away from Luffy. She then asked Rika if she had gone to the execution grounds again, which her daughter denied.
After Morgan was defeated, Ririka thanked Luffy and Roronoa Zoro for saving Shells Town by treating them to a meal at her home. She happily carried away empty dishes while the two and Koby ate. The Marines later arrived at the house and ordered the pirates to leave the town. Ririka watched in concern as Koby and Luffy punched each other and Koby vehemently denied being a pirate. As Luffy and Zoro sailed away, the townspeople and Marines cheered for them.
Diary of Koby-Meppo
- One Piece Manga and Anime — Vol. 1 Chapter 4 (p. 3) and Episode 2, Ririka debuts.
- Vivre Card - One Piece Visual Dictionary (EX Characters: East Blue Saga Vol. 2 #0036), Ririka's birthday is revealed.
- One Piece Blue: Grand Data File (p. 34), Ririka's name is revealed.
- One Piece Manga and Anime — Vol. 1 Chapter 7 (p. 4-20) and Episode 3, Ririka has Luffy, Zoro and Koby as guests.
- One Piece Manga and Anime — Vol. 14 Chapter 118, cover story: Diary of Koby-Meppo Vol. 29 and Episode 69, Ririka tries to calm down Rika.