Jett Klyne was 5 in The Boy when he played the character 'Young Brahms Heelshire'.
That was over 8 years ago in 2016.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 14, and has starred in 16 movies in total, 14 of those since The Boy was released.
In The Boy, I think Jett Klyne looks: