You're a rookie agent, newly transferred to X-COM's Chimera Squad, the flagship unification organization that does its best to bring all the different alien species inhabiting Earth together under one roof to fight crime and keep the peace. You've just finished putting your gear in your assigned locker when a white-scaled Viper slithers up to you, eyeing you up and down with a strangely hungry expression. "You must be the fresh meat," The Viper says with some measure of disdain in her voice.