Melton was born in 1998 in North Hollywood, California and is one of six children. He led his high school, Crespi, in Encino, California, to back-to-back state titles in 2015 and 2016. Melton left as the team's all-time leading scorer. He was named CIF Southern Section Division III Player of the Year as a senior in 2016, averaging 20.0 points, 9.3 rebounds, 4.3 assists, 3.5 steals and 1.2 blocks. Some of Melton's hobbies include biking and playing the piano, and he is interested in becoming a sports analyst after his playing career. Check him out on Instagram (@deanthonymelton).