Stephen Amell was 24 in The House Next Door when he played the character 'Buddy Harrelson'.
That was over 18 years ago in 2006.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 42, and has starred in 19 movies in total, 18 of those since The House Next Door was released.
In The House Next Door, I think Stephen Amell looks: