Jason O'Mara was 41 in Justice League: Throne of Atlantis when he played the character 'Batman / Bruce Wayne (voice)'.
That was over 9 years ago in 2015.
Today he is 51, and has starred in 24 movies in total, 12 of those since Justice League: Throne of Atlantis was released.
In Justice League: Throne of Atlantis, I think Jason O'Mara looks: