Casey Simpson was 8 in Despicable Me 2 when he played the character 'Additional Voices (voice)'.
That was over 11 years ago in 2013.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 20, and has starred in 10 movies in total, 9 of those since Despicable Me 2 was released.
In Despicable Me 2, I think Casey Simpson looks: