Beta-Style Gman addon - Half-Life - ModDB

Gman re-skinned to look more like the Beta render of him. This includes changes to his face, briefcase, and suit.

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HL2 Style Retexture for HL1 GMan Improved [Half-Life] [Mods]

About to do a HL universe playthrough, and no website seems to have a clear answer, but do I have all of the games needed? (no HDTF jokes) : r/HalfLife

Half-Life 2 Beta 2002 Style G-man [Half-Life] [Mods]

G-man render image - Half-Life 1: Guard Duty mod for Half-Life - ModDB

Half-Life 1: 2021 Community Patch : Various : Free Download, Borrow, and Streaming : Internet Archive

Beta G-Man model pack addon - Half-Life: Blue Shift - ModDB

Absolute Redemption

Raising the Bar: Redux G-Man Model [Half-Life 2] [Mods]

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Sven Co-op: Pleasing Taste, Some Monsterism