Is it because they're showing their teeth and that's a threatening gesture among predators? Is it because they are particular characters from some other media? Is it because the camera flash turned their eyes red and that's scary?

I too, am confused.

The logo on their chests is a US Space Force Logo, perhaps it’s an ICE parallel as he’s an illegal “alien” and their job is kinda like ICE but for space? Edit: also getting a little vibe of the torture/humiliation video that came out from Gitmo where the soldiers were enjoying themselves, and even a bit of the hostage videos that come out where they make the captive say how well they’re being treated etc.

yeah idgi either