"The Big Bang Theory" has promoted a character to series regular for the CBS comedy’s sixth season, according to The Hollywood Reporter’s Live Feed. The character is Stuart the comic book store owner, played by Kevin Sussman.

He will appear in seven to 13 episodes of the show, and joins Melissa Rauch and Mayim Bialik in being promoted, the story notes.

Sussman played a recurring role on the last season of Showtime’s "Weeds," but will be available to "The Big Bang Theory" on an as-needed basis with the promotion, the piece adds.