Byrne graduated Boston College with a double major in finance and theater and an MFA from The Theatre School at DePaul University. He intended to become an investment banker before a drama teacher at BC convinced him to follow his passion for acting.[5]
In addition to his on-screen roles, Byrne provided the voice of Bolin, one of the lead roles in the Nickelodeon series The Legend of Korra, from the show's beginning in 2012 to its end in 2014.[8] He voiced recurring character Firestorm in Justice League Action.
Byrne resides in Los Angeles with his wife, Jaime,[9] who was the executive director of health services in Los Angeles and Beverly Hills, and is currently president of Jaime Byrne Events, LLC. They have two daughters and one son.[10]
^Rohan, Virginia. "Old Tappan's P.J. Byrne co-stars on new CBS series 'Intelligence'", The Record (Bergen County), January 7, 2014. Accessed January 22, 2014. "It's a great time for P.J. Byrne.On the big screen, the actor with roots in Old Tappan can be seen as one of Leonardo DiCaprio's debaucherous crew in Martin Scorsese's The Wolf of Wall Street.... 'Fourth grade all through high school, that was Old Tappan,' says Byrne, whose older sister Courtney was in the same Northern Valley Regional High School at Old Tappan graduating class as Cory Booker."
^ abcde"P. J. Byrne (visual voices guide)". Behind The Voice Actors. Retrieved November 3, 2023. A green check mark indicates that a role has been confirmed using a screenshot (or collage of screenshots) of a title's list of voice actors and their respective characters found in its credits or other reliable sources of information.