Ko Ah-sung and Dong-ho Lee in The Host (2006)

Oh Dal-su and Ko Ah-sung in The Host (2006)

Yoo Ho-jeong and Ko Ah-sung in Heard It Through the Grapevine (2015)

Kim Hee-ae, Ko Ah-sung, and Kim Hyang-gi in Thread of Lies (2014)

Ewen Bremner, Chris Evans, Song Kang-ho, Octavia Spencer, Tilda Swinton, Ko Ah-sung, and Luca Pasqualino in Snowpiercer (2013)

Chris Evans, Song Kang-ho, Ko Ah-sung, and Luca Pasqualino in Snowpiercer (2013)

Chris Evans and Ko Ah-sung in Snowpiercer (2013)

Song Kang-ho and Ko Ah-sung in Snowpiercer (2013)