Steven and Oliver
Oliver (right) with Steven.
Oliver Chamberlain
Occupation: Estate Agent
Gender: Male
Nickname(s): O-Man
Born: c. 1971/72
Died: 2013
Status: Deceased
Appeared in: The World's End
Portrayed by: Martin Freeman

Oliver "O-Man" Chamberlain is one of the main characters featured in The World's End. He is portrayed by Martin Freeman.


Not much is known of Oliver's background. He was childhood friends with Gary King and Andy Knight, as well as Steven and Peter. His sister Sam happened to bump into Gary in the original crawl.