Katsuhiko Nakajima

Pro Wrestling Noah (2015–2023) On December 24, 2015, Noah held a press conference announcing that Nakajima would be ending his days as a freelancer and officially joining the promotion on January 1, 2016. On February 24, 2016, Nakajima picked up the biggest win of his career by defeating Minoru Suzuki in the main event of Noah's show in Korakuen Hall. As a result, Nakajima was granted a shot at the GHC Heavyweight Championship, but was defeated by Takashi Sugiura on March 19.

From July 22 to August 13, 2016, Nakajima took part in NJPW's 2016 G1 Climax, where he finished tied third in his block with a record of five wins and four losses, failing to advance to the finals. On October 23, Nakajima defeated Takashi Sugiura to win the GHC Heavyweight Championship for the first time. Nakajima made his first title defense in a match against the 2016 Global League winner, Minoru Suzuki, at One Night Cruise in Korakuen on December 2. Nakajima's second title defense was on December 24 as a part the Winter Navigation tour where he defended his title against his ally and occasional tag team partner, Masa Kitamiya. Following the match, Sugiura challenged Nakajima to a rematch for the title. This rematch would take place on January 7, 2017, which was the first show of Noah's first tour of 2017 "The First Navigation." Nakajima ultimately defeated Sugiura thus marking his third title defense. Nakajima defeated Go Shiozaki at "Great Voyage in Yokohama" on March 12, 2017, marking his fourth title defense. On June 4, 2017, at "Navigation with Breeze", Nakajima made his fifth title defense against Muhammad Yone. He followed it up with his sixth successful defense against Atsushi Kotoge on June 25, 2017. On July 20, he defeated Brian Cage to make his seventh successful defense. On August 26, Nakajima lost the title to Eddie Edwards in his eighth defense. On March 11, 2018, Nakajima and Kitamiya defeated 50 Funky Powers (Muhammad Yone and Quiet Storm) to win the GHC Tag Team Championship for the first time together, thus marking Nakajima's first reign with the title. However on April 29, they lost the titles to Go Shiozaki and Kaito Kiyomiya in their first defense. After the match, Nakajima and Kitamiya attacked Shiozaki and Kiyomiya, with Nakajima showing a new, more sadistic personality in the following months. They regained the titles one month later only to again lose them in their first defense on July 28 to Naomichi Marufuji and Akitoshi Saito. After Kitamiya unsuccessfully challenged Takashi Sugiura for the GHC Heavyweight Championship, he was challenged to a title match by the champion, which he accepted. Nakajima would also unsuccessfully challenge Sugiura for the title on October 4. Nakajima participated on the 2018 Global League, winning 4 matches and losing 2, failing to advance to the finals. However, after Naomichi Marufuji suffered an injury on his shoulder, a three way match to determine the new finalist between Kenoh, Kohei Sato and Katsuhiko Nakajima happened on November 25, which Nakajima won. On the finals, Nakajima would lose to Kaito Kiyomiya. Naomichi Marufuji and Akitoshi Saito vacated the GHC Tag Team Championship on November 28, a tournament to decide the new champions happened on December 7. Nakajima teamed with Go Shiozaki, and together they would defeat Cody Hall and Maybach Taniguchi at the first round, and Kenoh and Masa Kitamiya at the finals. They would lose the titles 9 days later to Maybach Taniguchi and a debuting Yuji Hino. They got their rematch on January 6, but failed again. However, after Muhammed Yone and Quiet Storm defeated Taniguchi and Hino, Nakajima and Shiozaki challenged the new champions. This led to a match on February 24, which Nakajima and Shiozaki won. Backstage, Nakajima said that his Tag Team with Go Shiozaki has a name, and it is Axiz. Axiz made their first successful defense on March 10, against the team of Eddie Edwards and Masa Kitamiya. From April 7 until April 30, Axiz took part in the 2019 Global Tag League, finishing the tournament with a record of five wins, one loss, and one draw, advancing to the finals of the tournament. On May 4, Axiz was defeated in the finals by Sugiura-gun (Takashi Sugiura and Kazma Sakamoto). On June 13, Axiz lost the GHC Tag Team Championship to Sugiura-gun, before defeating them in rematch on June 27 to win the GHC Tag Team Championship for the record-breaking third time. Afterwards, Axiz were challenged by Kaito Kiyomiya and Shuhei Taniguchi to match for their titles. Nakajima accepted Kiyomiya and Taniguchi's challenge for their titles on the condition that Kiyomiya would defend the GHC Heavyweight Championship against him. On July 21, Axiz defeated Kiyomiya and Taniguchi to make their first successful of the GHC Tag Team Championship. Six days later, Nakajima unsuccessfully challenged Kaito Kiyomiya for the GHC Heavyweight Championship.

On January 5, 2020, at January New Sunrise and Reboot Koruaken Hall Show, Axiz lost the GHC Tag Team Championship to Masaaki Mochizuki and Naomichi Marufuji. Afterwards, Axiz began focusing on their singles careers, after Nakajima defeated Daiki Inaba to win the Wrestle-1 Championship on January 12 as part of a working relationship between Noah and Wrestle-1. Nakajima lost the title to Kaz Hayashi on March 15. The following month, Axiz took part in the 2020 Global Tag League, making to their second consecutive Global Tag League final by winning their block in the 2020 tournament with a record of two wins and one loss. On April 18, they were defeated in the finals of the tournament by Sugiura-gun International (Hijo de Dr. Wagner Jr. and Rene Dupree). On May 9, Nakajima defeated Takashi Sugiura to win the GHC National Championship, meaning that Axiz held both Noah's singles championships. On August 4, on the first night of Departure, Nakajima lost the GHC National Championship to Kenoh.

On August 20, Axiz faced Sugiura-gun (Kazushi Sakuraba and Takashi Sugiura) in a losing effort for the vacant GHC Tag Team Championship. Afterwards, Nakajima turned on Shiozaki in order to join Kongo, effectively disbanding Axiz. From September 18 and October 11, Nakajima took part in the 2020 N-1 Victory, finishing the tournament with a record of four wins, and one loss to advance to the finals of the tournament. On October 11, Nakajima defeated Kaito Kiyomiya in the finals to win the 2020 N-1 Victory. This led on November 23 at Noah The Chronicle Vol. 4, Nakajima unsuccessfully challenging Go Shiozaki for the GHC Heavyweight Championship. Following Kongo's feud with Sugiura-gun, on January 31, Nakajima and Masa Kitamiya faced Sugiura-gun members Takashi Sugiura and Kendo Kashin in a winning effort. After the match, Nakajima and Kitamiya challenged Sugiura and his partner Kazushi Sakuraba to a title match for the GHC Tag Team Championship. Afterwards, in a post-match interview, Nakajima confirmed the reunion of The Aggression. On March 7, 2021, at Great Voyage in Yokohama, Nakajima and Kitamiya defeated Sugiura-gun's Kazushi Sakuraba and Takashi Sugiura to win the GHC Tag Team Championship for the third time. On May 31, following a GHC Tag Team Championship title defense, Kitamiya turned on Nakajima, leaving Kongo due to his hatred towards Nakajima, effectively ending their partnership. This led to Noah announcing a steel cage , hair vs. hair match on June 26. At the event Cage War, Nakajima was forced to shave his hair after being defeated by his former partner Kitamiya and would instruct his Kongo stablemate Kenoh to fully shave his head. Despite their breakup, Nakajima and Kitamiya were recognized as GHC Tag Team Champions, until on June 30, Nakajima and Kitamiya decided to face each other for the vacant titles, with Nakajima teaming with Soya and Kitamiya with Kaito Kiyomiya. On July 22, Nakajima and Soya were defeated by Kitamiya and Kaito Kiyomiya for the vacant GHC Tag Team Championship.

In September, Nakajima took part in the 2021 N-1 Victory, winning his block with a record of two wins and one loss, advancing to the semifinals of the tournament. On October 3, Nakajima defeated Masakatsu Funaki and then fellow Kongo stablemate Kenoh, in the semifinals and finals, respectively, to win the N-1 Victory for the second year, earning a shot at the GHC Heavyweight Championship. On October 10, Nakajima defeated Naomichi Marufuji to win the GHC Heavyweight Championship for the second time. On November 13, Nakajima was challenged by stablemate Kenoh to a double title-match for the GHC Heavyweight and GHC National Championships on November 28 at Noah the Best. At the event, Nakajima faced Kenoh in a 60-minute time limit draw to retain the GHC Heavyweight Championship and unsuccessfully challenging Kenoh for the GHC National Championship. Afterwards, Go Shiozaki made his return from injury challenging his former Axiz teammate Katsuhiko Nakajima to a title match for the GHC Heavyweight Championship on January 1, at Noah The New Year. On December 27, following a victory in a ten-man tag team match, where Nakajima pinned Shiozaki, he stated that if lost to him at Noah The New Year, Shiozaki should never repeat his catchphrase "I am Noah" again. At a press conference the following day, Shiozaki agreed to Nakajima's condition of never using his catchphrase "I am Noah" again, on the condition that if he won, Nakajima would be forced to reunite Axiz with him. At the event, Nakajima successfully defended the GHC Heavyweight Championship against Shiozaki, forcing him to abandon his "I am Noah" catchphrase. On January 16, Nakajima made his fourth successful title defense against Masa Kitamiya. On February 23, Nakajima lost the GHC Heavyweight Championship to Kazuyuki Fujita in his fifth title defense.

On June 12, 2022, at CyberFight Festival 2022, Nakajima teamed with Atsushi Kotoge and Yoshiki Inamura, facing off against Burning (Jun Akiyama and Tetsuya Endo) and Kazusada Higuchi in a six-man tag team match, where in the match, Nakajima delivered a slap to Endo that knocked Endo out, causing the match to be called off.

On April 16, 2023, at Green Journey in Sendai, he failed to capture the GHC Heavyweight Championship from Jake Lee. He competed in the 2023 N-1 Victory in the B Block, ending the tournament with 8 points and thus failing to advance to the finals. He departed Pro Wrestling Noah in October 2023, citing that he "wanted to challenge himself", as well as believing that 35 is a major crossroads in many peoples' lives. In his final match, he and Go Shiozaki were defeated by Naomichi Marufuji and Takashi Sugiura.

All Japan Pro Wrestling (2023–2024) On November 5, 2023, in his first AJPW match since 2012, Nakajima defeated Yuma Aoyagi to win the Triple Crown Heavyweight Championship for the first time. Then, he entered the Real World Tag League alongside Hokuto Omori, winning the tournament at the #1 spot with 12 points. The duo failed in their subsequent title shot, losing to the Saito Brothers on January 14, 2024.

On March 30, 2024, he lost the Triple Crown Heavyweight Championship to Yuma Anzai after 146 days. He departed AJPW shortly after.

Gleat (2024–present) On July 1, 2024, he debuted for Gleat, defeating Takanori Ito in 11 minutes to win the Lidet UWF World Championship. On July 1, 2025, Nakajima defeated Kaito Ishida for the G-Rex Championship. He lost the G-Rex Championship to El Lindaman on October 9, ending his reign at 100 days and one successful defense.

Pro Wrestling Zero1 (2026–present) On February 28, 2026, Nakajima made his return to Pro Wrestling Zero1 after nearly 12 years, where he defeated Junya Matsunaga.

Championships and accomplishments All Japan Pro Wrestling Triple Crown Heavyweight Championship (1 time) All Asia Tag Team Championship (1 time) – with Kensuke Sasaki Samurai! TV Cup Triple Arrow Tournament (2007) – with Kensuke Sasaki and Seiya Sanada Gleat Lidet UWF World Championship (1 time) G-Rex Championship (1 time) G-Class Tournament (2025) Michinoku Pro Wrestling Tohoku Tag Team Championship (1 time) – with Kensuke Sasaki New Japan Pro-Wrestling Yuko Six Man Tag Team Tournament (2004) – with Blue Wolf and Shinsuke Nakamura New Wave Award (2004) Pro Wrestling Illustrated Ranked No. 32 of the 500 best singles wrestlers in the PWI 500 in 2022 and 2024 Pro Wrestling Noah GHC Heavyweight Championship (2 time) GHC National Championship (1 time) GHC Junior Heavyweight Championship (3 times) N-1 Victory (2020, 2021) Global League Outstanding Performance Award (2014) Global Tag League Outstanding Performance Award (2013) – with Kensuke Sasaki Global Tag League Outstanding Performance Award (2014) – with Naomichi Marufuji Pro Wrestling Zero1-Max WWA World Junior Light Heavyweight Championship (1 time) Rookie of the Year (2004) Wrestle-1 Wrestle-1 Championship (1 time)