Gregg Prosser was born January 15,1971 in Brooklyn New York. Growing up with strong Irish-Catholic influences, Gregg attended Good Shepherd grammar school and then went on to Xavier High School in Manhattan. He attributes much of who is today , to his time spent at Xavier. Gregg began studying at T.Schrieber Studio in 2011, under Peter Jensen. Gregg's first major role was on the USA network TV show "White Collar" where he played Young James. He continues to audition, write, and produce in the NYC area.