Seungyoon ventured into acting through the sitcom, High Kick: Revenge of the Short Legged. His first lead role through the web series, We Broke Up earned him the "Best Male Actor" award by the K-web Fest Awards. Roles in tvN black comedy drama Prison Playbook and MBC's Kairos further solidified his career as an actor. He also served as the "122nd Masked King" on MBC's King of Mask Singer under the alias "Chow Yun-fat". He achieved a record-breaking six consecutive wins, earning him the titles: "The First 6-Time Idol Champion" and “The Youngest Champion”.