Lee Sung-yeol (Korean: 이성열; Hanja: 李成烈; born August 27, 1991), known mononymously as Sungyeol, is a South Korean singer and actor. He is a member of the South Korean boy band Infinite[2] and its sub-group Infinite F.
Prior to debut, Lee appeared in the television series as an extra such as Boys Over Flowers, Good Job, Good Job, and Jolly Widows. He originally planned to debut as an actor, and was once an actor trainee under SM Academy.[6]
Lee and bandmates L and Sungjong formed a subgroup called Infinite F and were announced during the "One Great Step Returns" encore concert. They performed their song "Heartthrob" from the Hi! School: Love On soundtrack.[13] Their first officially released song, "Crazy", was included on Infinite's second album, Season 2. They made their debut in Japan with their first single album, Koi No Sign, on November 19, 2014, following in Korea with their first single album, Azure, on December 2, 2014.[14]
On May 22, 2015, Lee was confirmed to be in the cast of JTBC's D-Day.[15]
2017–2020: Transition to lead roles
In 2017, Lee was cast as the male lead in a one-act drama called Temporary Cold Case Task Force, with rookie actress Lee Ye Hyun.[16] Lee starred in the KBS1 daily drama Love Returns.[17]
In 2019, Lee starred in the horror film 0.0MHz alongside Apink's Eun-ji, based on the webtoon with the same name.[18]
Lee enlisted as part of his mandatory military service as an active duty soldier on March 26, 2019.[19] He was released early on October 4, 2020, due to COVID-19 precautions, and was officially discharged on October 27, 2020.[20]
2021–present: Departure from Woollim
On March 31, 2021, Lee departed from Woollim Entertainment after his contract expired.[21]
On June 7, 2021, Lee signed with Management 2sang.[22]
^Jung Hee-yeon (December 1, 2021). "유지애·김소정→온유·성열 '4분 44초' 캐스팅 [공식]" [Yoo Ji-ae, Kim So-jeong → Onew, Seong-yeol's '4:44' Casting [Official]] (in Korean). Sports Donga. Archived from the original on December 1, 2021. Retrieved December 1, 2021 – via Naver.
^Jang Jin-ri (August 2, 2021). "[단독]이성열, 전역 후 연기로 활동 재개...'기억의 시간' 캐스팅" [[Exclusive] Lee Seong-yeol resumes his activities with acting after being discharged from the military... Casting of 'Time to Remember]. Spotify News (in Korean). Naver. Archived from the original on August 2, 2021. Retrieved August 2, 2021.
^Jeon Hyo-jin (February 9, 2023). "인피니트 이성열, '넘버스' 출연...김명수와 호흡" (in Korean). Sports DongA. Archived from the original on April 3, 2023. Retrieved February 20, 2023 – via Naver.
^Jung, Byung-guen (November 23, 2022). "인피니트 이성열, 데뷔 첫 연극 도전..."설레고 흥분돼" [Infinite Lee Seong-yeol's first play challenge... "I'm thrilled and excited]. The Fact (in Korean). Archived from the original on December 10, 2022. Retrieved December 10, 2022 – via Naver.