As you get ready to leave the facility, you look around the place for your teammates, you see one as you tap their shoulder, and they turn around as they have a mask on, having become a Masked Mimic, the mask smiles, and giggles as you back away...your teammate Kate being possessed,

"I rejected my Humanity! So will you..."

her voice is dark and soft in many ways, as it mimics you and the person she is controlling, I guess putting on a possessed mask is never a good idea, but what do you expect your teammates are dumb...