Dong-su (played by JANG Dong-gun)

Selected Filmography:

2005 - The Promise
2005 - Typhoon
2004 - Tae Guk Gi: The Brotherhood of War
2002 - The Coast Guard
2002 - 2009: Lost Memories
1999 - Nowhere to Hide

Joong-ho (played by JUNG Woon-taek)

Selected Filmography:

2006 - My Boss, My Student
2002 - Dig or Die
2001 - My Boss, My Hero

Sang-taek (played by SUH Tae-hwa)

Selected Filmography:

2002 - Funny Movie
2002 - Public Enemy
2001 - I Wish I Had a Wife
2000 - Bichunmoo

Joon-suk (played by YOO Oh-sung)

Selected Filmography:

2006 - Lump of Sugar
2003 - The Star
2002 - Champion
1999 - Attack the Gas Station