Robert Knepper was 54 in The Hunger Games: Mockingjay - Part 1 when he played the character 'Antonius'.
That was over 9 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: