Okay so, this girlie this-
This girlie
She is
She is such a girlie

This is Chilli

She is a "vent crawler", her main job being to fix anything vent related. To do her job well she has to be agile of course, and she's also quite the strong lad!
She is sweaty, oily, dusty and literally anything else you can imagine, of course because she works in the worst space in the entire spaceship.
Has red markings on her face from a gas mask she always wears in the vents to not inhale all the dust and bad air.
She is no imposter, but she can hide in the vents if she feels threatened.
She has a strange unrecognised illness which makes some parts of her skin orange and even red sometimes. It doesn't hurt much, only giving slight discomfort, but it does drain her energy fast.
You won't get ill if she coughs at you, but she will cough at you just to make you fuck off.