Lefort tried out for WWE in November 2011 in Liverpool, UK. He wrestled on Smackdown alongside Andy Baker and Zak Zodiac in a losing effort against The Big Show.
In August 2012, he was reported to NXT Wrestling. He debuted on May 29 of NXT, where he managed the debuting tag team of Garrett Dylan and Scott Dawson to defeat Jake Carter and Brandon Traven. After Dylan and Dawson lost a number one contender match for the NXT Tag Team Championship to Corey Graves and Kassius Ohno on the June 26 episode of NXT, Dylan was released from WWE in August 2013, but Lefort continued to manage Dawson. He also began managing Alexander Rusev. He made his NXT in-ring debut teaming with Rusev in a win over Enzo Amore and Colin Cassady. After the match, Rusev turned on Lefort and sided with the debuting Lana. Lefort went on to lose to Rusev in a singles match. With Dawson injured, Lefort began to wrestle in singles competition losing to Mason Ryan in early 2014.
On the May 8 NXT, Lefort formed a new tag team with himself and Marcus Louis as the Legionnaires, who have since been involved in a feud with Colin Cassidy and the recent returning Enzo Amore. Lefort faced Amore in a Hair vs Hair match at NXT Takeover: Fatal 4-Way and was defeated, but did not adhere to the stipulation post-match and instead ran away, leaving his partner Marcus Louis to be shaved bald instead. The following weeks Lefort tried to get revenge on Enzo and Colin Cassady. On the October 16 edition of NXT Marcus Louis finally snapped and turned on Lefort attacking him during a tag match. On June 24 2015, Lefort returned to NXT television teaming with Jason Jordan in a losing effort to Enzo Amore and Colin Cassady. In November, 2015, Lefort, at NXT house shows, started to escort Billie Kay to the ring. On February 5, 2016, Lefort left WWE.