Early last year, a group of dedicated Half-Life fans and talented developers released Black Mesa, a remake of the original 1998 Valve game. Fifteen years in the making, Crowbar Collective’s passion project received Valve’s blessing partway through development and is now the definitive way to play what was, in many ways, a poorly aged classic.

The list of elements that make this game a historic masterpiece can fill a book. But many can agree that the most memorable image from the game is the G-Man, a nameless character sporting a business suit, an awful crewcut, and a terrible stare. His role in the game’s events is never fully explained, but his scarce-yet-consistent presence suggests that he is key to Black Mesa’s clandestine projects. The G-Man appears several times throughout Half-Life, though these moments are easy to miss unless you know when and where to look for them. Spoilers for Black Mesa and the Half-Life series.

9 Black Mesa Inbound

The opening of Black Mesa sees Gordon Freeman riding a monorail into the Black Mesa facility. In Half-Life’s time, this was an impressive tour filled with animated spectacles and large 3D spaces seldom seen in contemporary games (even before years of improvements via mods). What stands out years later, however, is the sense of danger and secrecy this sequence establishes. The tram plods through a series of concrete-reinforced chambers, deeper into the belly of this mysterious structure.

Adding to the mystery is the G-Man’s first appearance, riding in a tram just across from Freeman’s. The G-Man’s appearance would be unremarkable… if he weren’t looking directly at the player as he passed by.

8 Anomalous Materials

Before finding his Hazmat suit, Freeman passes an office with two men speaking in muted tones. The conversation is indiscernible, but the two men are visible through the office window. One is yet another white coat-wearing scientist. The other is undeniably the same man Freeman saw while riding the monorail into the facility; the G-Man. As Freeman observes the pair, the G-Man looks pointedly back out the window, spurring the scientist to lower the blinds.

As the G-Man straightens his tie before disappearing behind the blinds, the player might wonder how he beat them to the office…

7 Unforeseen Consequences

After the Resonance Cascade, Freeman makes his escape from Black Mesa and comes to a room with red pipes and large tanks in the ground. Across from him is a catwalk, along which the G-Man walks towards a doorway. He gives Freeman a single glance before exiting the room, briefcase in hand.

This is the first appearance meant to unsettle the player truly. Amid a cosmic disaster, this recurring figure moves calmly through the wreckage, unperturbed by the sudden appearance of one-eyed monsters and fleshy, skull-sucking crabs. It is entirely unclear at this point what this man’s role was in this event, but nothing says “business as usual” quite like a suited man carrying a briefcase amidst chaos.

6 Office Complex

Though off-putting, the G-Man’s presence is scarce by this point, as if to avoid rousing too much suspicion and attention. Freeman sees him through an office window, the G-Man draws the shades. Visible on a catwalk, the G-Man quickly retreats to another room.

This time, as Freeman ascends a spiral staircase in the Office Complex, the G-Man appears directly opposite a locked door. He looks straight at Freeman through the glass, straightens his tie, and walks off towards the dark hallway beyond.

5 We’ve Got Hostiles

Before the HECU Marines’ first appearance, the G-Man appears in a room filled with motion-sensing explosives. He watches Freeman for a moment, standing above the scientist from another high catwalk, before walking out of the room.

4 Power Up

As Freeman enters Sector E Track Control, a giant monster with fire-blasting claws fights a group of marines. The marines don’t put up much of a fight. If Freeman dares to step out amongst the slaughter, he can see a control room towards his top left.

There, watching the chaos from the control room, is the G-Man. He stands stoic, unperturbed by neither the monster nor its massacre. He merely observes for a few moments, then turns away and disappears. When Freeman reaches the same control room later, a wounded guard is there but seems to have no recollection of the G-Man’s presence.

3 Apprehension

Freeman enters a control room overlooking a room of large pistons. Looking across the way, he sees the G-Man watching him from yet another control room. Even from this high place, the G-Man is noticeably higher than Freeman, as he is in every appearance. This gives the impression of the G-Man being in control, watching Freeman as he scurries around Black Mesa, a rat in a maze.

2 Lambda Core

Approaching the heart of Lambda Core, Freeman passes by a window looking out towards a web of railings suspended over a gap. The G-Man, facing away from Freeman, walks towards a glowing green orb. As he reaches it, he disappears.

This moment reveals how the G-Man has been navigating Black Mesa with ease, and it is integral to the game’s storytelling tactics (not to mention a tie-in to the Portal series). Whether the player catches every G-Man appearance or just one preceding the Lambda Core, this nearly impossible to miss moment explains so much of what’s preceded it while sparking a dozen more questions.

1 End Game

After an explosive final battle on the alien planet Xen (rife with horrifying hivemind creatures and infinite Gluon gun ammo), Freeman watches as the monster’s headquarters blows its top. Just as the fires approach him, time freezes around Freeman, and the G-Man appears ahead of him, walking on thin air, speaking for the first time. This one is impossible to miss; the G-Man has taken control of Freeman’s reality and stepped into the spotlight, finally allowing the scientist a glimpse at who has been pulling the strings of his living nightmare. All veils lifted, no answers offered.