Lee Forev Sang Dong is a Korean professional player.

Forev started his cybersport career in late 2013 when he joined MVP Phoenix. After failing at the Dota 2 Asia Championships 2015, he moved to MVP.HOT6, the club's second squad. At The International 2015, the team finished in last place. At the end of 2015, San moved to the main tag roster. After taking fourth place at The Shanghai Major 2016 and 5th-6th position at The Manila Major 2016, the team received a direct invitation to The International 2016, where they took 5th-6th place. In September 2016 Forev moved to Team Secret. In November he left the European team. In the winter of 2017 Forev joined Digital Chaos, where he played at The International 2017, and then moved to Immortals. The biggest achievement in the North American tag team for him was the 3-4th place at the PGL Open Bucharest. After leaving the club Forev constantly changed teams, and his most notable performance during this period was the final of qualifications for The International 2018, where Wind and Rain lost to the future Aegis winner - OG. In September 2018, San moved to J.Storm, where he regularly qualified for majors, but failed to help the team qualify for The International 2019. Leaving the team in May 2019, Forev tried to qualify for The International 2019 as a member of Team Jinesrbrus, but lost to Mineski in the final qualification.

In November 2019, Forev assembled a squad for T1, but over the course of the year he was unable to lead the team to victory at a major tournament. In the 2021 season, Forev played for a "mix" called HOYO and also replaced Kuku in T1 at ONE Esports Singapore Major 2021.

In March 2023, Forev became the coach of IHC Esports, but left the team in February 2024, however, in March of the same year he became the coach of the team again.