Dead Space 2

[Dr. Boogie]

I just figured they were the originators of the outbreak, and that the game doesn't show them slowly infecting everyone because the game is more about cheap scares rather than the slow, creeping terror of a space station being gradually overrun.

Also, I could be wrong about this, but I thought they had some vaguely human-ish qualities on the underside of those wings, like how the behemoth necromorphs have arms that look like they're made of torsos and such.