In June 2016, it was announced that Ruiz, performing under the name A-Kid would participate with Rod Zayas and Adam Chase in
Chikara's
King of Trios, as House White Wolf.[11] However, they would be defeated by
House Strong Style (
Pete Dunne,
Trent Seven, and
Tyler Bate) in the first round.[12] Next year, he participated in Chikara's Rey de Voladores tournament,[13] but was defeated in the finals by
Air Wolf.[12] The following years, A-Kid and Adam Chase (later, Carlos Romo) wrestled in the British circuit as Team White Wolf, winning the Attack! Tag Team Championship.[14] They also faced each other at the
RevPro 7th Anniversary Show.[15]
WWE
NXT UK (2019–2022)
A-Kid in 2019
Ruiz (as A-Kid) made his
WWE debut alongside fellow wrestler Carlos Romo on April 20, 2019, where they were defeated by
Gallus (
Mark Coffey and
Wolfgang) during a set of NXT UK tapings.[16] On October 17, 2019, A-Kid was announced as having signed for the
NXT UKbrand.[17] He made his singles debut on October 31, 2019, defeating
Kassius Ohno.[18] On November 26, 2020, A-Kid became the first-ever
NXT UK Heritage Cup Champion by defeating Trent Seven in the finals of a
tournament, becoming the first Spanish wrestler to win a championship in WWE.[19] On the May 20, 2021, episode of NXT UK, A-Kid lost the Heritage Cup to Tyler Bate. On the October 14 episode of NXT UK, A-Kid faced
Ilja Dragunov for the
NXT United Kingdom Championship but was defeated.
NXT (2022–present)
On the March 15, 2022 episode of
NXT, A-Kid made his debut on the brand coming from NXT UK in a winning effort against
Kushida for a opportunity for a ladder match at
NXT Stand & Deliver for the
NXT North American Championship.[20] The following week he competed on NXT in a losing effort against
Grayson Waller.[21] The following week on March 29, A-Kid was entered in a triple threat match against
Cameron Grimes and
Roderick Strong in a last chance opportunity for the NXT North American Championship match opportunity at
NXT Stand & Deliver.[22]
In July 2022, Ruiz was repackaged as a masked superhero named Axiom.[23][24] He competed on the July 19 episode of NXT 2.0 defeating
Dante Chen. He then entered a best of three series against
Nathan Frazer where he won the first match on the September 6 episode of NXT 2.0 but lost the other two matches on September 14 and October 11 episodes of NXT. At
NXT Deadline, Axiom failed to win the Iron Survivor Challenge. Axiom entered a brief rivalry with
Carmelo Hayes where he lost to him on the December 13 episode of NXT but defeated
Trick Williams on the January 17 episode of NXT. At
NXT Stand & Deliver, Axiom failed to win the NXT North American Championship and lost again on the following episode of NXT to
Wes Lee. Axiom entered a rivalry with
Scrypts where he defeated him on the May 2 episode of NXT, unmasking Scrypts after the match. Shortly afterwards, the two started teaming after Scrypts turned face. On the July 18 edition of NXT, Scrypts turned on Axiom and aligned himself with their opponents, the debuting Bronco Nima & Lucien Price, during their scheduled match.
^Kreikenbohm, Philip (November 26, 2020).
"NXT UK Heritage Cup Championship". Cagematch - The Internet Wrestling Database. Retrieved December 19, 2020.