Charles White Jr. was 19 in The Hunger Games: Mockingjay - Part 1 when he played the character 'District 8 Rebel (uncredited)'.
That was over 10 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: