Domhnall Gleeson was 35 in Star Wars: The Rise of Skywalker when he played the character 'General Hux'.
That was over 4 years ago in 2019.
Today he is 41, and has starred in 38 movies in total, 2 of those since Star Wars: The Rise of Skywalker was released.
In Star Wars: The Rise of Skywalker, I think Domhnall Gleeson looks: