- Born
- Birth nameJ Mack Slaughter Jr.
- Nickname
- Mack Daddy
- Height6′ 1″ (1.85 m)
- Born in Fort Worth, Texas and attended Fort Worth Country Day School. Was a regular at the Casa Manana theatre and at the age of 15 was chosen by a local radio station to sing in the first DFW area boy band 'Sons of Harmony'. After the band broke up in 2001 he moved to Los Angeles to pursue his career. His first television role was a guest on What I Like About You (2002) alongside Amanda Bynes.- IMDb Mini Biography By: Nathan J Rossberg
- He is currently in training to become a doctor at UT Southwestern, a top 20 Medical School.
- As of 2021, he is a practicing emergency physician in his hometown of Fort Worth, Texas.
- Has "Holden" tattooed on the inside of his left wrist. A tribute to Holden Caufield, protagonist from J.D. Salinger's novel, 'The Catcher in the Rye'.
- Studying Pre-Health Professions at Texas Christian University in Fort Worth, Texas.
- Plays the drums, guitar, and saxophone.
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