Jack O'Neill (Stargate)

Jack O'Neil is a previously retired colonel as the main character of the Stargate: SG-1 series, which went on for 10 seasons. He is played by Richard Dean Anderson. He is the leader of the SG-1 team, which also consists of Daniel Jackson, a scientist, Samantha Carter , an astro-physisist, and Teal'c , a Jaffa who turned against the Guo'uld race and became good.