Lee Ga-hyun, known mononymously as Gahyun, is a South Korean singer, rapper and actress under Hogiroun Company. She is the maknae of the girl group Dreamcatcher. On March 24, 2026, Hogiroun Company announced that Gahyun has signed with them to promote as an actress under the stage name Lee Seo-yul. She will continue to use her real name for her activities as a member of Dreamcatcher.
2024Dreamcatcher 7 Doors of Christmas: A Lucky EncoreMovieas Gahyun2023Dreamcatcher [REASON Boutique from InSomnia]Movieas Self (Gahyun)2022Apocalypse: Broken HalloweenMovieas Gahyeon2022Dreamcatcher at Primavera Sound 2022Movieas Self (Gahyeon)2022Kpop.Flex 2022 Global StreamMovieas Self (Gahyeon)2022Apocalypse: Save Us - Mini ConcertMovieas Self (Gahyeon)2021HALLOWEEN MIDNIGHT CIRCUSMovieas Herself2021Dreamcatcher MindTV showas Self · 10 episodes2021CROSSROADS: Part 2. DystopiaMovieas Self (Gahyeon)2021CROSSROADS: Part 1. UtopiaMovieas Self (Gahyeon)2020Dreamcatcher [Dystopia: Seven Spirits]Movieas Self2020DREAMCATCHER CONCERT: GLOBAL STREAMING INTO THE NIGHT & DYSTOPIAMovieas Self (Gahyeon)2010KBS Drama SpecialTV showas Kim Seo-Yoon · 1 episodes