Robert Knepper was 54 in The Hunger Games: Mockingjay - Part 1 when he played the character 'Antonius'.
That was over 10 years ago in 2014.
Today he is 64, and has starred in 79 movies in total, 28 of those since The Hunger Games: Mockingjay - Part 1 was released.
In The Hunger Games: Mockingjay - Part 1, I think Robert Knepper looks: