Noah Emmerich was 27 in Last Action Hero when he played the character 'Rookie'.
That was over 31 years ago in 1993.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 59, and has starred in 36 movies in total, 35 of those since Last Action Hero was released.
In Last Action Hero, I think Noah Emmerich looks: