Courtney Henggeler as Missy Cooper
It’s hard to imagine Sheldon having a sister, moreso a fraternal sister. Though they are the total opposite in the series because of her bratty, snarky, and cheeky sense of humor, she has played a significant role as well. Courtney Henggeler has appeared in a few shows but the series Mom, alongside Anna Faris and Allison Janney, is an impressive one. Apart from acting, this New Jersey girl is a model and singer as well.
John Ross Bowie as Barry Kripke
There’s no one we love to hate, but Barry Kripke, PhD. Who wouldn’t forget the competition between Cooper and Kripke in the series. Outside of acting; John Ross Bowie also works as a writer and comedian. Some of his guest appearances include Reno 911!, Curb Your Enthusiasm, Glee, and Good Luck Charlie. Moreover, he’s an author of the cult movie Heathers.