Born in Thessaloniki, Greece and raised in West Hollywood , California , Constantine pursued various sports to try to break out of his shell and find his 'niche'. He soon realized sports were not going to be his calling in life, and his best friends father, who had done theater in Greece, suggested that he try acting. After a few workshops and acting classes, Constantine discovered he was far more talented and comfortable on stage than he was on the field. So, at the age of eight, he signed with an agent and quickly booked his first commercial.