Mrs. Costello is a fictional character portrayed by Cleo King in the TV series Young Sheldon.
In the first episode they appeared in, titled A Mother, a Child, and a Blue Man's Backside (season 1), they were 55 years old.
They appear in 1 episodes out of a total of 141 aired
Episodes1
A Mother, a Child, and a Blue Man's Backside
episode S1.E18 april 2018Mary bans Sheldon from reading a mature comic book, and Sheldon decides it's time to stop living under Mary's thumb.
