The Evolution of Gman (1998-2020) : r/HalfLife

Mr. Squarepants, nice to see you again, G-Man

A page from Half-Life 2: Raising the Bar describing the creation of the G-Man's face : r/HalfLife

Evolution of Half-Life Games 1998-2020

G-man by telephium, G-Man

The evolution of the G-Man 1998 - 2020, G-Man

The Evolution of Eli Vance (1998-2020) : r/HalfLife

Half Life 2 Our Benefactors Can'T Jump - Colaboratory

SPOILER] I created a simple timeline of Half Life including Half-Life: Alyx [ENDGAME SPOILERS] : r/HalfLife

HALF-LIFE) Evolution of G-Man (1998-2020)