Ringer is a young taekwondo practitioner who was born and raised in Dallas, Texas. At age 12, he achieved a first-degree black belt rank with the American Taekwondo Association and is proficient with a variety of Eastern weapons. He is part of a taekwondo club, from which he heard about Paramount Pictures' open casting call to play Aang. For his audition, he sent in a homemade video that depicted him showing off his skills in martial arts. After being signed for The Last Airbender movie, he joined the Creative Artists Agency.