Shortly after quitting football, she found a professional wrestling school in Port Talbot and began training under Dave Stewart and "Wild Boar" Mike Hitchman.

Despite playing football for the majority of her youth, Newell grew up as a fan of professional wrestling after being introduced to it at the age of five and cites Molly Holly as her favourite female wrestler and dream opponent.

Newell made a one-time appearance with Total Nonstop Action Wrestling at its pay-per-view event Slammiversary XI as a fan under her real name.

[5] She debuted her Luchadora the Explorer character on 24 January 2015, teaming with Brookes in a loss to The Anti-Fun Police (Damian Dunne and Ryan Smile).

[16] In January 2017, Newell embarked on her first tour of Japan, competing with the all-female promotion World Wonder Ring Stardom.

In her first match on the tour, she and Kay Lee Ray defeated Oedo Tai (Kris Wolf and Viper).

[19] It was reported that Newell was replaced in the WWE Mae Young Classic, because of suffering a torn anterior cruciate ligament before the tournament had even began.

After being announced as a competitor in the 2018 Mae Young Classic, Newell entered the tournament on 8 August, under the ring name "Tegan Nox",[21] defeating Zatara.

Nox returned the following day, defeating Nicole Matthews in the second round before suffering another knee injury in her quarter-final match against Rhea Ripley.

[27] Nox and Kai would go on to lose their title match against The Kabuki Warriors (Asuka and Kairi Sane) on 30 October episode of NXT.

Later that night, Nox joined Triple H and the rest of the NXT roster as they declared war on both Raw and SmackDown, and vowed to win the Survivor Series brand warfare.

[31] After a near ten-month absence, Nox returned on 6 July 2021 at The Great American Bash, causing LeRae and Indi Hartwell to lose the NXT Women's Tag Team Championship.

[36] After a year, Nox returned to WWE on 2 December 2022 episode of SmackDown, rescuing Liv Morgan from an attack by Damage CTRL (Bayley, Dakota Kai and Iyo Sky).

[37][38] On 16 December episode of SmackDown, Nox and Morgan lost to Damage CTRL for the Women's Tag Team Championship.

[40] On 25 September episode of Raw, Nox picked up a victory over Natalya to receive a NXT Women's Championship match against Becky Lynch.

This alliance would result in Nox defeating both Women's Tag Team Champions Chelsea Green and Piper Niven in singles matches.

[44][45] Newell has stated her ring name "Tegan Nox" is a tribute to both her Welsh heritage and being a fan of the Harry Potter franchise.