- Is Irish-Korean. His father met his mother while doing a tour of duty in South Korea.
- Worked at Caroline's Comedy Club in Manhattan sweeping floors and answering phones before he actually did stand-up at a nearby club.
- His 2003 documentary 13 or Bust chronicles 13 shows he did in one night in Manhattan.
- Has done USO tours in Iraq (2004), Afghanistan (2005, '08 and '10) and Japan and Guam (2009).
- Did an NFL promo with Prince for Super Bowl XLI in 2007.
- An irate patron hit him in the head with a barstool once during a stand-up routine and a college-football team in South Carolina chased him to his car after he insulted them during a set.
- On his sitcom Sullivan & Son, his mother's name is Ok Cha, which is his real-life mother's name.
- Performed with his TV costars Owen Benjamin, Ahmed Ahmed and Roy Wood Jr. on the Sullivan & Son Comedy Tour.
- Steven Byrne — Father
- William Byrne — Brother
- Ok Cha Byrne — Mother
- Jessica Byrne — Wife
- Olivia Byrne — Daughter
- Kent State University, Kent, Ohio, United States (BA in Theater; 1997)
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