Seth Yancy Fronda Fedelin (born July 9, 2002) is a Filipino actor and singer. Fedelin first appeared on television as a housemate on the reality show Pinoy Big Brother: Otso (2018). He has since appeared in various films and television series, such as Kadenang Ginto (2019), Huwag Kang Mangamba (2021), and Dirty Linen (2023). He also starred in My Future You, an official entry to the 50th Metro Manila Film Festival on December 25, 2024, and won two awards: Breakthrough Performance in the MMFF Gabi Ng Parangal held at Solaire Grand Ballroom in Parañaque City and Best Actor at Manila International Film Festival held in Los Angeles, California.