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).
Iain Armitage (in Young Sheldon) Voiced by: Jim Parsons (in Young Sheldon as narrator) Information; Full name: Sheldon Lee Cooper: Gender: Male: Occupation: Theoretical physicist (The Big Bang Theory) Student (Young Sheldon) Title: Doctor: Family: Mary Cooper (mother) George Cooper, Sr. (father) (deceased in The Big Bang Theory) Missy Cooper (twin sister)