Brendan Sexton III was 14 in Empire Records when he played the character 'Warren'.
That was over 28 years ago in 1995.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 43, and has starred in 56 movies in total, 54 of those since Empire Records was released.
In Empire Records, I think Brendan Sexton III looks: