That was over 6 years ago in 2015.
Today he is 29, and has starred in 9 movies in total, 3 since Maze Runner: The Scorch Trials was released.
In Maze Runner: The Scorch Trials, I think Dylan O'Brien looks:
Maze Runner: The Scorch Trials scores 6.5 out of 10 on The Movie Database.
Dylan O'Brien's first acting role was as 'Charlie Brown' in Charlie Brown's Blockhead Revenge, released in 2011 when he was 20.