Jannis Niewöhner was 12 in The Treasure of the White Falcons when he played the character 'Dirk'.
That was over 19 years ago in 2005.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 32, and has starred in 42 movies in total, 40 of those since The Treasure of the White Falcons was released.
In The Treasure of the White Falcons, I think Jannis Niewöhner looks: