John Locke (Lost)

John Locke is a fictional character on the ABC television series Lost. In the first three episodes Locke was largely a background character, but with the fourth episode "Walkabout," which revealed his past, he became one of the most prominent. He is played by Terry O'Quinn, who had previously worked with co-creator and executive producer J.J. Abrams as a recurring actor on Alias.

Basic facts

• Played by: Terry O'Quinn
• Flashback-centric episodes: Walkabout, Deus Ex Machina, ', Orientation
• Reason for trip: Rejected from walkabout tour of Outback
• Profession: Regional collections supervisor for a box company