Seo Dong-soo

1995

• [ ] Bitter and Sweet (Security guard Kang) 

2000

• [ ] Pisces (Blue Note Owner) 

2006

• [ ] Tazza: The High Rollers (Yong-pal) 

2007

• [ ] Seven Days (Dr. Cho) 

2009

• [ ] Thirst (Hyo-seong) 
• [ ] Running Turtle (Fat Man) 
• [ ] White Night (Crime lab investigation team leader (uncredited)) 
• [ ] Private Eye (Fat Man) 

2012

• [ ] National Security (Section Chief Baek) 
• [ ] A Werewolf Boy (Army Colonel (uncredited)) 

2016

• [ ] Elephant in the Room (Doctor Seo) 

2018

• [ ] Habitat (Neighbor) 

2020

• [ ] Voice of Silence (Young-mook)