Matt O'Leary was 12 in Mom's Got a Date with a Vampire when he played the character 'Adam Hansen'.
That was over 24 years ago in 2000.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 36, and has starred in 35 movies in total, 34 of those since Mom's Got a Date with a Vampire was released.
In Mom's Got a Date with a Vampire, I think Matt O'Leary looks: