Pascal's parents were Allende supporters and were involved in the opposition movement against the military dictatorship of Augusto Pinochet in Chile around the time of Pascal's birth. Because of this, soon after his birth, Pascal's family was granted political asylum in Denmark. The family ultimately moved to the United States, and Pascal was raised in Orange County, California and San Antonio, Texas. Pascal was involved in competitive swimming during his early years and took part in the state championships in Texas at the age of 11, but immediately stopped competitive swimming after getting into drama class. He studied acting at the Orange County School of the Arts and New York University's Tisch School of the Arts.