Moss will play Gertrude Verbanski, a deadly owner of a private spy firm that's in competition with Chuck and Sarah's new operation. TVLine reports that Moss's character will be a romantic foil and rival to John Casey, and that casting breakdowns describe her as "Miranda Priestly meets Lara Croft, with a rather wicked sense of humor."
Moss joins a pantheon of sci-fi legends 'Chuck' has been able to recruit as guest stars. Mark Hamill, who played Luke Skywalker in 'Star Wars,' signed on for the Season 5 premiere earlier this week. Other luminaries have included as James Bond (Timothy Dalton), Sarah Connor (Linda Hamilton), Superman (Brandon Routh), Dr. Sam Beckett (Scott Bakula) and Number Six (Tricia Helfer).
At Comic-Con, Adam Baldwin, whose character Verbanski will reportedly romance, told AOL TV, "This Gertrude Verbanski character that's coming along, and I really don't know anything about her, but I'm sure she'll be kick-ass and hilarious."
Chuck' Season 5 premieres Friday Oct. 21, 8PM ET on NBC.
Check out AOL TV's interviews with the cast of 'Chuck' from Comic-Con: