Guillermo Contreras was born on October 4, 1995 in El Paso, Texas before relocating to Waukesha, WI. He attended Waukesha South High School where his interests in acting began. In both 2013 and 2014, he was recognized by the Tommy Awards (now Jerry Awards), one of Wisconsin's High School Musical Award Programs, earning Outstanding Lead and Supporting Awards for his performances as Paul San Marco in A Chorus Line and John the Baptist/Judas in Godspell. He went on to study Drama at New York University's Tisch School of the Arts (BFA 2018).