Comic-Con 2016: Big Bang Theory casts Katey Sagal, Jack McBrayer as Penny's family
Katey Sagal has been tapped to play Penny’s mom Susan, while Jack McBrayer will portray her brother Randall on the new season of The Big Bang Theory, executive producer Steve Molaro revealed at the show’s Comic-Con panel on Friday.
“We are finally going to meet more of Penny’s family,” Molaro said. “We’re going to be meeting Penny’s mom and her brother in the first episode back. We’re super excited that Katey Sagal will be playing Penny’s mom.”