Marton Csokas was 27 in Jack Brown: Genius when he played the character 'Dennis'.
That was over 30 years ago in 1994.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 57, and has starred in 48 movies in total, 46 of those since Jack Brown: Genius was released.
In Jack Brown: Genius, I think Marton Csokas looks: