Courtney Henggeler as Missy Cooper
It’s hard to imagine Sheldon having a sister, especially a fraternal sister. Alas he does and she is his polar opposite! Courtney Henggeler has appeared in a few shows but the series Mom, alongside Anna Faris and Allison Janney, is an impressive one. Apart from acing, this New Jersey girl is a model and singer as well.
John Ross Bowie as Barry Kripke
There’s really no one we love to hate more than Barry Kripke Ph.D. 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.