Im Chul-soo made his acting debut in the 2004 theater play The Seagull and has since become active on both the stage and the screen. In 2015, he played small roles in several TV series such as SBS’s Six Flying Dragons and tvN’s Answer Me 1988. In 2017, he appeared in the blockbuster fantasy-action film Along With the Gods: The Two Worlds and also in its sequel Along With the Gods: The Last 49 Days. He eventually bagged more significant roles in the high-rating tvN dramas Mr. Sunshine and Crash Landing on You in 2018 and 2019, respectively. In 2021, he acted alongside Song Joong-ki in the hit tvN series Vincenzo. In 2022, he was cast in tvN’s fantasy romance Alchemy of Souls.
Im Chul-soo attended Dankook University.