Dean has voiced Lincoln the longest out of all of his English voice actors, having voiced him in 66 episodes over 18 months.
Dean is the first of Lincoln's English voice actors to have voiced him for an entire season, followed by Asher Bishop who voiced Lincoln for the entirety of Season 5.
Assuming that Seasons 1-4 take place in 2016, Lincoln was most likely born in 2005 if he was to be 11 from Seasons 1-5, making Dean the exact same age as Lincoln in real time. This makes Dean the closest of Lincoln's English voice actors to Lincoln's age in real time.