NXT Championship
After signing with WWE's developmental system, NXT, and adopting his current ring name, Bálor won the NXT Championship, and he was the longest reigning champion at 292 days until Adam Cole broke the record on 19 March 2020. Also during his time in NXT, Bálor became the first co-winner of the inaugural Dusty Rhodes Tag Team Classic with Samoa Joe. Shortly after arriving on the main roster, Bálor became the first wrestler in WWE history to win a world title in their pay-per-view debut, the second ever Irish world champion in WWE (after Sheamus) as well as becoming the quickest wrestler in WWE history to win a world title at 27 days following his main roster debut by becoming the inaugural WWE Universal Champion at SummerSlam 2016. During his time on the main roster, Bálor was also a two-time Intercontinental Champion. In 2019, Bálor returned to NXT, later winning the NXT Championship in 2020 becoming the third two-time champion (after Samoa Joe and Shinsuke Nakamura). In 2021, the NXT Championship became officially recognized by WWE as a world championship during Bálor's reign making him a three-time world champion in WWE.