Charles White Jr. was 19 in The Hunger Games: Mockingjay - Part 1 when he played the character 'District 8 Rebel (uncredited)'.
That was over 9 years ago in 2014.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 29, and has starred in 3 movies in total, 2 of those since The Hunger Games: Mockingjay - Part 1 was released.
In The Hunger Games: Mockingjay - Part 1, I think Charles White Jr. looks: