Theo Saville is a main character of A Million Little Things. He is the son of Eddie Saville and Katherine Kim.
- By the events of "Secrets and Lies", Theo is 7 years old. However, by the events of "The Rock", he is 8 years old.
- As these episodes take place in January and May/June 2019 respectively, it means that Theo was born between these months in 2011.
Gallery of photographic stills used to promote the character.