Portal 2 (2011) (Source)
Dr. Issac Kleiner (Unused model, presumably for Half-Life: Alyx)
It's Shephard Saturday
Adrian Shephard (Half-Life)
This pic goes hard
Zombine (Half-Life) Appears in: Half-Life 2 Episode 1 and 2 "Hmmm. A Combine zombie. That's, that's like a...a.. Zombine! Right? Heh... Zombine, get it?" - Alyx Vance
Gordon Freeman Protagonist and Playable Character of Half-Life (1998), Half-Life 2 (2004) and Half-Life 2 episodes 1 (2006) and 2 (2007)
Early GLaDOS concept art (Portal)
