Alberto Jose (A.J.) Castro was born in San Jose, Costa Rica on September 10, 1983. A.J.'s mom remarried when A.J. was 9 years old and the family moved to Miami, Florida. A.J. Studied Theater, Business and Psychology in college at Florida International University and Cal State LA. It was through Psychology that he found a passion for studying people and behaviors. He decided to try to apply his knowledge of psychology to acting and found a natural synergy. Upon graduation from FIU In 2005, A.J. moved to Los Angeles to start his career.