I think it's safe to assume it isn't a zombie...

Halloween 2008

"I can't lie to you about your chances, but... you have my sympathies."

(I hope beyond hope you all get that reference, but if not: we're Ripley and Ash from Alien.)

"I never drink... milk."

(No, Wyatt's costume isn't thematically connected with ours, unless you're willing to consider that Alien was clearly influenced by Mario Bava's Planet of the Vampires... Huh? Huh? Huh? Yeah.)