High School: Waller attended Ellison High School. He played AAU for the Copperas Cove Crusaders under coach Jonathan Brown. Waller helped his team to a Lone Star State Classic championship, a Next Level Heart of Texas Showdown championship, a Ball'ne Ballers Big 12 championship, and a Texas Game Time Championship. He averaged 11.4 points, 4.2 rebounds, and 4.7 assists per game in AAU. Waller participated in teh Nike Proskills Basketball Camp.
Personal: Son of Kenny and Kerri Waller ... exercise science major. Waller is active in church mission trips and community outreach programs.