Hero Fiennes Tiffin was 10 in Bigga Than Ben when he played the character 'Spartak'.
That was over 15 years ago in 2008.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 26, and has starred in 15 movies in total, 10 of those since Bigga Than Ben was released.
In Bigga Than Ben, I think Hero Fiennes Tiffin looks: