Park Seok-cheol (played by Lee Dong-wook) is a protagonist in The Nice Guy.
Kang Mi-yeong (played by Lee Sung-kyung) is a protagonist in The Nice Guy.
Park Seok-hee (played by Ryu Hye-young) appears in The Nice Guy.
Park Seok-kyung (played by Oh Na-ra) appears in The Nice Guy.
Yun Byeong Su (played by Kim Do-yoon) appears in The Nice Guy.
