Kim Sung Sik is a South Korean musical actor and member of the crossover group Letteamor. He obtained a bachelor’s degree in Theater from Dongguk University. He made his theatrical debut in 2017 as part of the ensemble in the musical "Rebecca". In 2020 he participated in "Phantom Singer 3" and despite struggling in the early rounds, he made it to the finals and was grouped with 3 other singers, forming Letteamor, earning 3rd place. In 2022 he got one of the main roles in the musical "Mata Hari".
(Source: Korean = Namu Wiki || Translation = MyDramaList)
