Thomas Grant Gustin akaberekerwa muNorfolk, Virginia. Iye ndiye mwanakomana waTina Haney, mukoti wevana, uye Thomas Gustin, purofesa wekoreji. Munguva yemakore ake echikoro chesekondari, akaenda kuGavhuna Chikoro cheArt chirongwa muNorfolk chemimhanzi yemitambo. Akaendawo kuHurrah Players Incorporated inova sangano remitambo muVirginia. Muna 2008, akapedza kudzidza kuGranby High School ndokuenderera mberi kuenda kuBFA Music Theatre Chirongwa paElon University kuNorth Carolina kwemakore maviri.
purogiramu yeGovernor's School for the Arts