Jharrel Jerome says he skipped lunches on the set of the Anthony Robles wrestling biopic ‘Unstoppable’ in order to work out. The actor tells PEOPLE about transforming into the athlete, who worked his way to a NCAA championship in 2011 despite being born with only one leg.

Anthony Robles was a champion wrestler. Now Jennifer Lopez stars in his biopic. Robles breaks down fact vs. fiction in the sports drama "Unstoppable."

How can he be so monstrous and brutal on the mat, but so kind and protective off the mat?” That’s one of the central tensions at play in Unstoppable (now available on Prime Video), William Goldenberg’s directorial debut and an empathetic portrait of Robles that highlights his physical limitations,