Greg was born and raised in New York City to his Spaniard mother and Columbian father. He didn't jump straight into comedy, and first worked as a lawyer. Somewhere he made the jump, and is now known for his distinct comedic delivery and his over the top ranting skills.
Over the years he has been on countless television specials, comedic roasts, and comedy tours.
He has appeared in Comedy Central's show Lewis Black's Root of All Evil, in which he gets to apply his many lawyer based skills as a recurring advocate.