Thomas cried most of his babyhood. He only did it for the attention and loved bossing his parents around.
When he grew into a toddler. He bossed most of his toys around and parents. If no one listened to him he cried and screamed. He learned walking and potty training by his mother and walking by his father.
When he grew into a child he learned not to scream to get his way. He developed his athletics skills. He aspired to become the best long distance sim there is but mostly aspired to rule the world with his sister. With her hypnotism and his leadership skills nothing stood in their way.