Kevin Hart was 20 in Def Comedy Jam, Vol. 7 when he played an uncredited character.
That was over 23 years ago in 2000.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 44, and has starred in 95 movies in total, 79 of those since Def Comedy Jam, Vol. 7 was released.
In Def Comedy Jam, Vol. 7, I think Kevin Hart looks: