Colony (2026) Cast & Character Guide — No Spoilers | Who's That?

Who plays who in Colony (2026)? Browse a spoiler-free character guide with photos of every major character and the actors behind them, including Gianna Jun, Koo Kyo-hwan, Ji Chang-wook.

• Kwon Se-jeong — played by Gianna Jun
• Seo Young-cheol — played by Koo Kyo-hwan
• Choi Hyun-seok — played by Ji Chang-wook
• Choi Hyun-hee — played by Kim Shin-rock
• Kong Seol-hee — played by Shin Hyun-been
• Han Kyu-seong — played by Go Soo
• Lee Bong-seok — played by Lee Jung-ok
• Kang Woo-cheol — played by Kim Jong-tae
• Citizen — played by Hwang Jae-yeol
• Lee So-eun — played by Lee Dam-hee
• Bully Girl — played by Chae Seo-eun
• Bully Boy — played by Kim Sung
• Old Man — played by Kim Jae-rok
• Sushi Restaurant Employee — played by Oh Gyeong-hwa
• Minister — played by Choi Gwang-il
• Chief of Staff — played by Kim Hyeong-mook
• Chief Police — played by Hong Seok-bin
• Ju Cheol-min — played by Lee Hyun-kyun
• Lee Hynn-min — played by Lee Kang-wook