Kim Yong-sun, known professionally as Solar, is a South Korean singer, songwriter and actress under RBW Entertainment. She is the leader of the girl group MAMAMOO and its sub-unit MAMAMOO+. She made her solo debut with the single Spit It Out on April 23, 2020. She released her first extended play 容: Face with its lead single Honey on March 16, 2022. She also made her debut in Taiwan with the Chinese single Floating Free on June 11, 2025. Solar ventured into musical acting through the musical Mata Hari for its 2022 production. She made her film debut with the role of Mi-yeon in the horror film The Cursed: Insatiable Desires (2025).

Filmography

• 2025The Cursed: Insatiable Desires — Han Mi-yeon
• Make Mate 1 — Special Judge
• Lee Mujin Service — Guest
• Arts Master: The War of Hip-Hop Singers — Judge
• Midnight Horror Story
• Street Dance Girls Fighter
• The Legend, The New Singer — Judge
• Vincenzo — Vocals
• MAMAMOO COMEBACK SHOW
• Road to Kingdom — Guest
• 2019Mamamoo 2nd Concert in Japan: 4season Final — Kim Yong-sun
• 2019Mamamoo 4season F/W Concert — Kim Yong-sun
• 2017Moosical: Curtain Call
• Strong Girl Bong-soon — Theme Song Performance
• Imaginary Cat — Jung Soo-in
• KBS Song Festival — Host

Appearances as themselves (36)

• 2026Mamamoo - 4WARD World Tour Full Concert — Self
• Build Up: Vocal Boy Group Survival — Self - Judge
• 2023MAMAMOO: My Con the Movie — Self
• MONSTOP Travel Agency — self (Solar)
• The Seasons — Self
• 2022Kpop.Flex 2022 Global Stream — Self (Solar)
• Look, My Shoulder's Dislocated — Self
• MAMAMOO: Where Are We Now — Self
• 2022MAMAMOO: Where Are We Now? — Self
• Music Universe K-909 — Self
• Take 1 — Self
• 2021MAMAMOO 'WAW' THE MOVIE — Self
• 2021MAMAMOO - Livenow — Self
• Gamsung Camping — Self
• Show!terview with Jessi — Self
• Sixth Sense — Self
• How Do You Play? — Self
• Queendom — Self - Contestant
• Amazing Saturday — Self
• Baek Jong-won's Alley Restaurant — Self
• Idol Room — Self
• Star Road — Self
• 2017MAMAMOO Concert: Moosical Curtain Call — Self
• Park Jin-young's Party People — Self
• Let's Eat Dinner Together — Self
• Mamamoo x GFriend Showtime — Self
• I Can See Your Voice — Self
• Men on a Mission — Self
• Mystery Music Show: King of Mask Singer — Self - Panelist
• Two Yoo Project - Sugar Man — Self
• MMMTV — Self
• SNL Korea — Self
• Weekly Idol — Self
• Running Man — Self
• You Hee-yeol's Sketchbook — Self
• We Got Married — Self