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Alyx_Vance Barney_Calhoun Gordon_Freeman Half-Life Half-Life_2 Isaac_Kleiner Source_Filmmaker

Alyx_Vance Barney_Calhoun Gordon_Freeman Half-Life Half-Life_2 Isaac_Kleiner Source_Filmmaker

Alyx_Vance Barney_Calhoun Gordon_Freeman Half-Life Half-Life_2 Isaac_Kleiner Source_Filmmaker

Alyx_Vance Gordon_Freeman Half-Life Half-Life_2

GLaDOS Gnaughty Gordon_Freeman Half-Life Half-Life_2 Portal Portal_2 RandyAndalites crossover