Main vocalist for the six-piece K-pop group ONEUS that debuted on January 9, 2019 under RBW Entertainment. They released a debut single called "Valkyrie" before dropping a 2019 mini-album called Light Us.
He was a contestant on Produce 101 and on MIXNINE.
He has enjoyed playing football and basketball. He is also good at tumbling.
He was born Lee Gunmin, but legally changed his name to Lee Seoho. He has an older sister.
He and fellow ONEUS member Ravn were both participants on MIXNINE.