Samuel Witwer was 36 in Justice League: Throne of Atlantis when he played the character 'Orm (voice)'.
That was over 9 years ago in 2015.
Today he is 46, and has starred in 20 movies in total, 7 of those since Justice League: Throne of Atlantis was released.
In Justice League: Throne of Atlantis, I think Samuel Witwer looks: