Cameron Monaghan was 24 in Reign of the Supermen when he played the character 'Connor Kent / Superboy (voice)'.
That was over 5 years ago in 2019.
Today he is 30, and has starred in 26 movies in total, 5 of those since Reign of the Supermen was released.
In Reign of the Supermen, I think Cameron Monaghan looks: