Rikki Quiapon, also known by her online handle Riku or RikuCasts, is a Filipino voice actress and esports shoutcaster born on February 4, 1993 in the Philippines. Her career began during her college years while she was studying for a Bachelor of Science in Information Technology, with the initial goal of working in the game development industry. She supported herself through voice acting work, which allowed her to save enough money to purchase her own personal computer.

In 2014, Quiapon successfully auditioned for a casting position with Garena Philippines for the League of Legends Pro Gaming Series, launching her career as a play-by-play shoutcaster. This marked the beginning of her professional involvement in the esports industry, where she became recognized as one of the few female shoutcasters in Southeast Asia. Her early work included casting matches such as the Garena Premiere League in 2015. She later transitioned into color casting, which expanded her opportunities within the talent pool. Beyond live commentary, Quiapon has also contributed content and statistics for Garena's esports website.

Quiapon's voice acting work primarily consists of Tagalog dubbing for various anime series. One of her notable roles is Montmorency in the series The Familiar of Zero F. Her other major anime credits include Akatsuki in Log Horizon and its second season, Chaika Haltgen in Chaika - The Coffin Princess Avenging Battle, Amano Nene, Cutemon, and Sparrowmon in Digimon Fusion, Hannah Weber in Elementhunters, Naho Takamiya in Orange, and Emily Amonde in Mobile Suit Gundam AGE. She has also provided voices for Raimon Natsumi in Inazuma Eleven, Chiho Mihara, Chise Mihara, and Toshihiko in Kobato., Iris Eris and Milk Callaud in The Legend of the Legendary Heroes, and characters in series such as LBX, Yumeiro Pâtissière, and Say I love you..

Quiapon has continued to build her career as a broadcaster and content creator. Her esports casting work has extended to tournaments such as the ZOTAC Cup Fight For Charity in 2019. She has also appeared as a guest personality at public events like the TLC Festival in Manila. In more recent years, her casting portfolio has expanded to include Riot Games titles such as VALORANT, where she worked on broadcasts for VALORANT Game Changers Pacific and VALORANT Challengers Southeast Asia. She has also participated as a competitor in the TeamFight Tactics Vegas Open in 2023. Quiapon is active as a streamer on Twitch and creates content for her YouTube channel, HatsuneRiku.