Luis Martínez was born in New York City to a Nuyorican family, but raised in Dorado, Puerto Rico, where he first saw the World Wrestling Council (WWC) on television and developed an interest in becoming a professional wrestler.

Martinez's first appearance at an ROH show was in 2015, where he competed in two dark matches under his real name, losing the first to The Romantic Touch and winning the second alongside Shaheem Ali against Hellcat and Mattick.

Martinez and Whitmer went on to briefly feud with the former ROH World Tag Team Champions War Machine (Hanson and Raymond Rowe), first wrestling them to a no contest and then defeating them in an anything-goes match.

On the first night on February 26, Martinez teamed up with Los Ingobernables de Japón members Hiromu Takahashi and Tetsuya Naito, defeating Dalton Castle, Hiroshi Tanahashi and Ryusuke Taguchi.

[16] Before signing with WWE, Martinez made an appearance at the Money in the Bank pay-per-view on June 29, 2014, playing the role of a security guard standing behind Stephanie McMahon, who confronted The Bella Twins.

[38] Priest lost the championship to Gargano at Halloween Havoc on October 28 in a Devil's Playground match, ending his reign at 65 days.

[46] On the April 5 episode of Raw, Priest and Bad Bunny challenged John Morrison and the Miz to a tag team match at WrestleMania 37, which they accepted.

[48] On the following episode of Raw, Priest lost to The Miz and Morrison in a 2-on-1 handicap match after outside interference by Maryse, marking his first loss on the main roster.

[51] Priest returned on the July 12 episode of Raw, saving Humberto Carrillo from an attack by United States Champion Sheamus after their title match and starting a feud between the two.

[54] He made his first successful title defense against Sheamus and Drew McIntyre in a triple threat match on the August 30 episode of Raw.

[61] Over the following months, Priest successfully defended the title on Raw against the likes of Sami Zayn,[62] Apollo Crews,[63] Robert Roode,[64] Dolph Ziggler,[65] Kevin Owens[66] and AJ Styles.

[71] At Hell in a Cell on June 5, The Judgment Day (Edge, Priest and Rhea Ripley) defeated Styles, Finn Bálor, and Liv Morgan in a six-person mixed tag team match.

[74] On September 3, at Clash at the Castle, Priest and Bálor lost to Edge and Rey Mysterio, after which Dominik turned heel on both of them to join The Judgment Day.

[81] On the February 6 episode of Raw, Priest defeated Angelo Dawkins to qualify for the Elimination Chamber match for the United States Championship.

[83] On the Raw after WrestleMania 39, Priest got involved in Dominik's confrontation with his former tag team partner Bad Bunny, chokeslamming him through the announcer's table.

[92] At Payback on September 2, Priest and Bálor defeated Kevin Owens and Sami Zayn to win the Undisputed WWE Tag Team Championship after interference from Dominik, Ripley and JD McDonagh.

[96] At Crown Jewel on November 4, Priest attempted to cash in on Rollins after his successful title defense against Drew McIntyre, but Zayn stopped him and ran off with the briefcase before he could officially do so.

[103] At Elimination Chamber: Perth on February 24, Priest and Bálor successfully defended the titles against New Catch Republic (Pete Dunne and Tyler Bate).

[107] On June 15, at Clash at the Castle: Scotland, Priest successfully defended the title against McIntyre in the latter's home country after interference from Punk.

[109][110] At the event on July 6, Priest successfully defended his title against Rollins and McIntyre, the latter of whom cashed in his newly won Money in the Bank briefcase during the match, but was attacked by Punk.

[111] After the event, Priest began showing more respect to his opponents as his crowd support gradually increased, teasing a face turn in the process.

At SummerSlam on August 3, Priest lost the title to King of the Ring winner Gunther via technical submission, ending his reign at 118 days.

[115] On the November 4 episode of Raw, Priest defeated "Dirty" Dominik Mysterio, Seth "Freakin" Rollins and Sheamus in a fatal four-way match to become the #1 contender for the World Heavyweight Championship.

[117] At Saturday Night's Main Event on December 14, Priest once again challenged Gunther for the title in a triple threat match also involving Bálor in a losing effort.

[118] On the January 13, 2025 episode of Raw, Priest defeated Bálor in a street fight match despite interference from Carlito and McDonagh, ending their feud.

[122] However, his character gradually evolved and developed a more machismo, rockstar-like attitude that pursues more fame, recognition and success, further emphasized by portraying bars, parties and women frequently with him in backstage segments.

[128] Priest now utilizes a sitout chokeslam called the South of Heaven as his finisher, which he had originally used during his time with Ring of Honor before using it again after joining The Judgment Day in 2022.

[129] During his time as a member of The Judgment Day following Edge’s departure, Martínez would begin to pay homage to his Puerto Rican heritage by incorporating spoken Spanish into his promos and refer to some of his nicknames in the language, such as “Señor Money In the Bank” while holding the Money In the Bank briefcase, and “El Campeón” during his reign as World Heavyweight Champion.

After leaving The Judgment Day, he began to speak with a New York accent during his promos while still paying homage to his Puerto Rican roots.