Oh Dal-su
Oh Dal-su (오달수) is a South Korean actor. Oh Dal-su began his acting career in theater in Busan, and since 2001 has been the head of theater company Singiru Manhwagyeong ("Mirage and Kaleidoscope"). His rich experience on the stage, in local productions such as Ogu, later made Oh an in-demand supporting/character actor on the big screen. Oh has starred in numerous successful films, in roles such as the owner of the organized crime-funded private jail in Oldboy (2003), a former gang boss in Mapado (2005), a weapons smuggler in A Bittersweet Life (2005), a transvestite in Foxy Festival (2010), a Chinese-Korean conman in The Thieves (2012), and a sympathetic inmate in Miracle in Cell No. 7. He also dubbed the voice of the monster in The Host (2006).
Known for
No Other Choice 
Oldboy 
The Host 
Lady Vengeance 
Along With the Gods: The Two Worlds 
Thirst 
Memoir of a Murderer 
A Bittersweet Life 
The Good, the Bad, the Weird 
Tunnel 
I'm a Cyborg, But That's OK 
Miracle in Cell No. 7 
Veteran 
Assassination 
The Thieves 
The Attorney 
Ode to My Father 
The Pirates 
Crying Fist 
Master 
I, the Executioner 
Soar Into the Sun 
The Show Must Go On 
The Servant 
Detective K: Secret of Virtuous Widow 
A Tale of Legendary Libido 
Once in a Summer 
Private Eye 
The President's Barber 
A Bloody Aria 
Slow Video 
Detective K: Secret of the Lost Island 
My Paparotti 
Detective K: Secret of the Living Dead 
Late Blossom 
Codename: Jackal 
You Call It Passion 
I Want to Know Your Parents 
Troubleshooter 
Forbidden Quest 
Next Door Neighbor 
Project Makeover 
Take Off 2 
4PM 
Bear Man 
Old Days 
Boss 
The Player 2: Master of Swindlers