Dane DeHaan was 30 in Valerian and the City of a Thousand Planets when he played the character 'Valerian'.
That was over 7 years ago in 2017.
Today he is 38, and has starred in 29 movies in total, 3 of those since Valerian and the City of a Thousand Planets was released.
In Valerian and the City of a Thousand Planets, I think Dane DeHaan looks: