Tony Todd - Combine OverWiki, the original Half-Life wiki and Portal wiki

Tom Leonard - Combine OverWiki, the original Half-Life wiki and Portal wiki

Jeremy Bennett - Combine OverWiki, the original Half-Life wiki and Portal wiki

Gary - Combine OverWiki, the original Half-Life wiki and Portal wiki

Combine Over - Introduction: 314 URB-LOC 0017 Advisor, Airboat, Andrea Wicklund, Antlion Hill, Aperture Science Bomb, Aperture Science Crusher, Incinerator, Aperture Science Robot Worke

Combine Over - Introduction: 314 URB-LOC 0017 Advisor, Airboat, Andrea Wicklund, Antlion Hill, Aperture Science Bomb, Aperture Science Crusher, Incinerator, Aperture Science Robot Worke

Mike Wardwell - Combine OverWiki, the original Half-Life wiki and Portal wiki

Matthew Scott - Combine OverWiki, the original Half-Life wiki and Portal wiki

Half Life Book, PDF

Dario Casali - Combine OverWiki, the original Half-Life wiki and Portal wiki

Combine Over - Introduction: 314 URB-LOC 0017 Advisor, Airboat, Andrea Wicklund, Antlion Hill, Aperture Science Bomb, Aperture Science Crusher, Incinerator, Aperture Science Robot Worke

Tristan Reidford - Combine OverWiki, the original Half-Life wiki and Portal wiki

Vortigaunt, Neo Encyclopedia Wiki

Lone Vort - Combine OverWiki, the original Half-Life wiki and Portal wiki

Vortigaunt - Combine OverWiki, the original Half-Life wiki and Portal wiki

Half Life Book, PDF