Frankie Muniz was 0 in Deadly Care when he played the character 'Oscar'.
That was over 37 years ago in 1987.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 38, and has starred in 27 movies in total, 25 of those since Deadly Care was released.
In Deadly Care, I think Frankie Muniz looks: