Richard Harmon was 17 in Percy Jackson & the Olympians: The Lightning Thief when he played the character 'Smart Ass Kid'.
That was over 14 years ago in 2010.
Today he is 32, and has starred in 35 movies in total, 29 of those since Percy Jackson & the Olympians: The Lightning Thief was released.
In Percy Jackson & the Olympians: The Lightning Thief, I think Richard Harmon looks: