On August 31, 2020, it was reported that Briggs had signed a contract with WWE. On July 6, 2021, Briggs was announced to be a part of the 2021 NXT Breakout Tournament. On the July 27 episode of NXT, Briggs was defeated by Carmelo Hayes in the first round. On the NXT 2.0 premiere on September 14, Briggs formed a tag team with the debuting Brooks Jensen and faced Imperium (Fabian Aichner and Marcel Barthel) in a losing effort, establishing themselves as faces. On the January 18, 2022 episode of NXT 2.0, Briggs and Jensen competed in the men's Dusty Rhodes Tag Team Classic, but were eliminated by eventual winners the Creed Brothers (Brutus and Julius) in the first round. On the April 12 episode of NXT 2.0, they took part in a five-team gauntlet match for the vacant NXT Tag Team Championship, but failed to win. On the June 23 episode of NXT UK, Briggs and Jensen defeated Dave Mastiff and Jack Starz, Mark Andrews and Wild Boar, and Die Familie (Teoman and Rohan Raja) in a fatal four-way elimination match to win the vacant NXT UK Tag Team Championship, making them the first non-European tag team to win the titles. At NXT Worlds Collide on September 4, Briggs and Jensen would lose the titles to Pretty Deadly (Elton Prince and Kit Wilson) in a unification match which also saw the NXT Tag Team Championships on the line.
On the December 27, 2023 episode of NXT, Briggs, Jensen and Henley agreed to go their separate ways, splitting up the team. On the January 16, 2024 episode of NXT, Briggs received an endorsement from John "Bradshaw" Layfield in a backstage segment. The following week, Briggs took on Trick Williams in a losing effort. After the match, Briggs attacked Williams with a clothesline, thus turning heel for the first time in his WWE career. On the February 6 episode of NXT, Briggs seemingly consoled his former partner Brooks Jensen about having to work alone, only to then badmouth him and tell him to grow up. On the February 20 episode of NXT, Briggs defeated Jensen in a singles match and consoled him after. At NXT Roadblock, Briggs would try to talk Jensen out of taking a match with Oba Femi, but Jensen was persistent on facing Femi and would be ultimately defeated the following week with Briggs watching at ringside. At NXT Stand and Deliver on April 6, Briggs failed to win the NXT North American Championship from Femi in a triple threat match which also included Dijak.