The star spoke more about his character and he called him “very ambitious”, describing his character’s personality as very similar to his own.
He has been working in the world of acting for at least 15 years, since he got his first professional TV role.
Martinez, who said he was never a fan of public speaking, chose to become an actor to feel more confident.
He said: “In the beginning, being a Latin male you hold in your feelings and the only feeling you express is anger.
“I was able to let all my feelings out, I was allowed to be emotional. It was that permission to let my feelings out.”
The Sinner is available to watch on Netflix now