Hidden Identity was a series starring the actor who was best known for being in what other series?
Hidden Identity (TV series): Hidden Identity () is a 2015 South Korean television series starring Kim Bum, Park Sung-woong, Yoon So-yi and Lee Won-jong. Kim Bum: Kim Sang-bum (; born July 7, 1989), known by the stage name Kim Bum, is a South Korean actor, dancer, singer and model.
i don't know