Marini was born in Grasse, Alpes-Maritimes, France, to a Greek mother and Italian Father. After working as a baker in his father's bakery since he was eight years old and high school, he joined the French army and was stationed in Paris, where he served as a fireman in the Paris Fire Brigade. It was in Paris where Marini met Fred Goudon, a Photographer who introduced him to the world of modeling. After fulfilling his military duties, he went to the United States to learn English while working as a model. He began his career as a model in his early twenties. One of his first jobs was a television commercial for Bud Light beer. He made his acting debut at the age of 29, in the 2005 horror film Screech of the Decapitated.