Yoon San-ha is a South Korean singer and member of the boy group ASTRO, which debuted in 2016 under Fantagio. Born on March 21, 2002, he is known for his vocal abilities and charming stage presence. As the youngest member, or "maknae," of the group, he has gained a significant fan following. In addition to his music career, Yoon San-ha has appeared in various television programs and variety shows, showcasing his personality and talents. He is also recognized for his participation in ASTRO's sub-unit activities and has contributed to the group's overall success in the K-pop industry.