Played by Iain Armitage

Sheldon is the 9-year-old child prodigy, based on The Big Bang's original leading man. 

With a once-in-a-generation mind, Sheldon is light years ahead of his peers. 

A miniature genius, he's capable of calculating advanced mathematics and scientific problems. 

Although academically gifted, Sheldon lacks social skills, he has trouble reading other people's behaviour. 

He also possesses a sense of superiority over everyone around him. 

But despite his attitude and his intelligence, Sheldon's heart is in the right place, and he cares deeply for his family.