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Official Site: Valve

This is a list of characters in the Half-Life video game series, which comprises Half-Life, Half-Life 2, and their respective expansion packs and episodes.

This section deals with characters that appear in Half-Life, Opposing Force, Blue Shift, and Decay.

Gordon Freeman, PhD, is the silent protagonist of the Half-Life series and the playable character in Half-Life and all games in the Half-Life 2 series. He is a theoretical physicist and holds a PhD from MIT in that field. At the time of Half-Life, he works at Black Mesa Research Facility, a facility in New Mexico, conducting nuclear and subatomic research.

The G-Man (voiced by Michael Shapiro) is a mysterious recurring character. He is known to display peculiar behavior and capabilities beyond that of a normal human, and his identity and motives remain almost completely unexplained. He plays the role of an overseer and employer, both observing the player as the games progress and pulling strings to control the outcome of specific events throughout the Half-Life saga. The G-Man's constant appearances in the Half-Life games, as well as his revealing monologues with series protagonist Gordon Freeman, imply that he is of great importance and somewhat anchors the endeavors of the player. His mysterious nature has made him an icon of the Half-Life series.

Colette Green has not been a contender in any CBUB matches.