Fred Tatasciore was 43 in Phineas and Ferb: The Movie: Across the 2nd Dimension when he played the character 'Additional Voices'.
That was over 13 years ago in 2011.
Today he is 57, and has starred in 164 movies in total, 116 of those since Phineas and Ferb: The Movie: Across the 2nd Dimension was released.
In Phineas and Ferb: The Movie: Across the 2nd Dimension, I think Fred Tatasciore looks: