Finding:

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   Barney Calhoun

   Barney was joined by his co-worker Otis (named after another character from The Andy Griffith Show); both Barney and Otis helped Adrian Shephard, the protagonist of Opposing Force, in much the same way that Barney had helped Gordon Freeman in the original game, such as opening authorized access doors and killing some enemies along the game. ... | Barney Calhoun |
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   Doctor Rosenberg

   In Half-Life: Blue Shift, Barney Calhoun helped Dr. Rosenberg and two of his colleagues escape from Black Mesa. ... Doctor Gordon Freeman · Corporal Adrian Shephard · Barney Calhoun · Doctor Gina Cross · Doctor Colette Green · Chell
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   Half-Life: Opposing Force

   Gordon Freeman · Adrian Shephard · Barney Calhoun · Doctor Gina Cross · Doctor Colette Green · Chell
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   Black Mesa Research Facility

   It remained unclear whether or not the actions of the Lambda team, in particular their launching of the satellite, actually helped to close the dimensional rifts. ... Gordon Freeman · Adrian Shephard · Barney Calhoun · Doctor Gina Cross · Doctor Colette Green · Chell
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   G-Man (Half-Life)

   Doctor Gordon Freeman · Corporal Adrian Shephard · Barney Calhoun · Doctor Gina Cross · Doctor Colette Green · Chell
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   Locations in the Half-Life series

   Doctor Gordon Freeman · Corporal Adrian Shephard · Barney Calhoun · Doctor Gina Cross · Doctor Colette Green · Chell
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   Gordon Freeman

   Doctor Gordon Freeman · Corporal Adrian Shephard · Barney Calhoun · Doctor Gina Cross · Doctor Colette Green · Chell
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   List of Half-Life universe characters

   Gordon Freeman · Adrian Shephard · Barney Calhoun · Doctor Gina Cross · Doctor Colette Green · Chell
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   List of creatures in the Half-Life series

   Doctor Gordon Freeman · Corporal Adrian Shephard · Barney Calhoun · Doctor Gina Cross · Doctor Colette Green · Chell
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    The Resistance (Half-Life 2)

    Gordon Freeman · Adrian Shephard · Barney Calhoun · Doctor Gina Cross · Doctor Colette Green · Chell

Explore the following pages on Powerset:

• Barney Calhoun,
• Doctor Rosenberg,
• Half-Life: Opposing Force,
• Black Mesa Research Facility,
• G-Man (Half-Life),
• Locations in the Half-Life series,
• Gordon Freeman,
• List of Half-Life universe characters,
• List of creatures in the Half-Life series,
• The Resistance (Half-Life 2)