Regina King as Janine Davis
Janine Davis was played by Regina King, who rose to fame for her roles in Jerry Maguire (1996) and the crime show Southland. Janine worked in HR at the university. She develops a rock relationship with the guys, who continuously managed to offend her.
Mckenna Grace as Paige Swanson
Paige Swanson, played by Mckenna Grace, is a 10-year-old child prodigy who turns out to be the only person smarter than Sheldon. Sheldon becomes jealous when Dr. Sturgis begins paying attention to her. Unlike Sheldon, Paige is very sweet with excellent social skills.