His father, Mark, is a black belt in shuri-ryū karate, and his older sister, Colbey, is an amateur kickboxing champion and a professional mixed martial artist currently signed to ONE Championship.

[19] However, after Holbrook withdrew from the bout citing an injury eight days prior to the event, Northcutt would instead make his welterweight debut against Bryan Barberena.

[22] Northcutt made a return to lightweight and faced Enrique Marín on July 9, 2016, at UFC 200, where he won via unanimous decision.

[23][24] Northcutt had his second welterweight bout when he faced Mickey Gall on December 17, 2016, at UFC on Fox 22.

[35] Appearing on The Ariel Helwani Show early September 2018, Northcutt confirmed his contract expired following the fight with Ottow, making him a free agent.

[38] On February 26, 2019, it was announced that Northcutt was scheduled to make his promotional debut against Cosmo Alexandre on May 17, 2019, in ONE: Enter the Dragon.

[41] On November 22, 2019, Northcutt announced that he would be moving down two weight classes to compete at featherweight (155 lbs) in ONE Championship.

“I learned my lesson about fighting a weight class too big, going back down to 155, and it’ll be better for me,” Northcutt said in an interview with MMA News.

[42] Northcutt was scheduled to fight Shinya Aoki in a Lightweight bout, after a near two-year layoff, at ONE on TNT 4, on April 28, 2021.

[47] However, Northcutt withdrew during the event because his cornermen were reportedly denied visas,[48] and was replaced by John Lineker in a openweight bout.

[3] In January 2017, Northcutt announced he would withdraw from Texas A&M University to train mixed martial arts full-time.