Lajoie was born in Longueuil, Quebec, Canada, and raised in the South Shore of Montreal. His father is Quebecois quÃ©bÃ©cois and his mother Is-English, canadian and he is the third of nine. Children he graduated From Dawson 'college s professional theatre program in. 2002
Missy Cooper is Sheldon's fraternal twin sister, who is ironically the direct opposite of her brother in many ways (besides being a female, she is not above physical confrontation, is very charming and amicable, as well as possessing a very cheeky sense of humor).
30 Rock's Jack McBrayer also makes his Big Bang debut as Randall, Penny's brother who has infamously been mentioned on the series as a drug-making criminal. MORE: 'Big Bang Theory' Welcomes Katey Sagal and Jack McBrayer as Penny's Family Members. The Big Bang Theory's season 10 premiere, which airs Monday Sept. 19 on CBS, is bringing everyone's families together to celebrate Penny and Leonard's wedding ceremony.