What's visible in the frame
A close-up shows a man in stylized computer animation: dark slicked-back hair, a thick beard, eyes wide with terror, mouth open in a scream. His head is thrown back, and a red detail and someone's hand are visible at his throat. The background is warm and blurred, in orange and yellow tones, like a lit interior. In the right corner of the frame is a dark red object.
This is not just a portrait: the pose and facial expression convey that the man has been caught off guard, and nothing good awaits him.
Where it comes from
Reportedly, the clip is connected to the universe of the Apex Legends shooter by Respawn Entertainment. The animated trailer for the fourth season, released on February 4, 2020, shows a flashback 25 years before the game's main events: the character Revenant, a former human turned into a killing machine, carries out a contract. The victim is named as Marcos Andrade. It has not been reliably established which exact second of the clip this frame corresponds to: the picture belongs to this storyline, but the precise scene has not been identified.
The caption with the question about who is in front of the hero and the answer “Death” is already the work of users: it turns the game episode into a universal template.
How the joke works
The question “Who are you?” is asked by someone who already realizes everything is bad but still hopes for an explanation. The answer “Death” is dramatic and absurdly honest. In memes, anything can be put in place of death: a deadline, a test, a call from the boss, a utility bill.
The comedy comes from a gap in scale. A minor everyday nuisance is described in the language of real tragedy, and the hero's reaction matches: his face looks as if the end is near. The exaggeration is not hidden but delivered with complete seriousness.
There is one more reason for its popularity: the dialogue format. Two short lines are easy to write and remember, and any characters and situations can be inserted. The frame sets the tone in advance, so only the answer has to be invented, and the more unexpected it is, the better.
Examples for your own caption
“Who the hell are you? — A notification saying ‘Your report is due tomorrow’” — a deadline as an inescapable force.
“Who are you? — That textbook I haven't opened all semester” — the student version.
“Who are you? — Grandma asking ‘when are the grandchildren coming?’” — a family gathering as an unexpected threat.
“Who are you? — Monday” — the shortest and most recognizable version.
How to use the template
Split a dialogue caption into two lines: the question on top, the answer below. Short words and recognizable everyday troubles work well. If the picture is captioned with a single phrase, it is better to choose a situation where the surprise is unwelcome but not dangerous.
Do not use the template for jokes about real tragedies: the hero of the frame is a fictional character, and the death in the caption should remain a metaphor.
If you want to soften the grimness, choose a completely harmless figure for the “death”: an alarm clock, a to-do list, an unpaid subscription. Then the frightening frame works as a parody of itself rather than as a gloomy picture.