Player Profile



Nationality :Japanese
Date Of Birth :June 12, 1991
Height :188 cm (6 ft 2 in)
Weight :110 kg (243 lb)

Great-O-Khan: A Brief Biography

A Japanese professional wrestler signed to New Japan Pro-Wrestling (NJPW), Tomoyuki Oka (Oka Tomoyuki, born June 12, 1991), better known by his ring name Great-O-Khan (-O-, Gurto–Kn), is a member of the United Empire stable. He also competes for Revolution Pro Wrestling (RevPro), a partner organization of NJPW with roots in the United Kingdom, where he currently holds the title of British Heavyweight Champion for the first time. He has won the IWGP Tag Team Championship twice in NJPW with Jeff Cobb.


  • Pro Wrestling Illustrated
    • Ranked No. 157 of the top 500 singles wrestlers in the PWI 500 in 2021
  • New Japan Pro-Wrestling
    • IWGP Tag Team Championship (2 times) – with Jeff Cobb
  • Revolution Pro Wrestling
    • British Heavyweight Championship (1 time, current)
    • RPW Undisputed British Tag Team Championship (1 time) – with Rampage Brown
  • Southside Wrestling Entertainment
    • SWE Tag Team Championship (1 time) – with Rampage Brown
  • Tokyo Sports
    • Technique Award (2021)
    • Fighting Spirit Award (2022)
    • Best Tag Team Award (2022) – with Jeff Cobb

Height of Great-O-Khan, Weight, and Body Stats

Height188 cm (6 ft 2 in)
Weight110 kg (243 lb)

All-time Career of Great-O-Khan

New Japan Pro-Wrestling

Young Lion (2015–2020)

On February 25, 2016, at Lion’s Gate Project 1, Oka, a fellow rookie who had started training with New Japan Pro-Wrestling (NJPW), wrestled fellow rookie Katsuya Kitamura to a draw in a dark match. On September 1 at Lion’s Gate Project 3, Oka and Kitamura engaged in another dark match that ended in a draw. On January 3, 2017, Oka made his televised debut and fell short of his trainer Yuji Nagata. On January 27, January 31, and February 2, Oka was defeated by Nagata once more. On February 9, Nagata, Hirai Kawato, and Jyushin Thunder Liger defeated Oka, Yoshitatsu, and Henare. On February 21, following an ankle injury sustained by Henare during their match, Oka defeated Henare by referee stoppage. He and his trainer Yuji Nagata defeated Katsuya Kitamura and Manabu Nakanishi on April 13 at Lion’s Gate Project 4. He and Nagata triumphed over Kitamura and Hiroshi Tanahashi on July 22. Then, Oka and Kitamura created the tag team “Monster Rage”. Oka competed in the 2017 Young Lion Cup from October 12 to December 21, finishing third with a record of three victories and two defeats. On July 5, 2017, Oka and Kitamura made their AJPW debuts, but they were defeated by Wild Burning (Jun Akiyama and Takao Omori).

Oka debuted a new appearance and ring name, Great-O-Kharn, on June 30, 2018. With a brand-new finisher, a Mongolian chop delivered from the second turnbuckle, he defeated Shota Umino. With New Japan affiliate Revolution Pro Wrestling, Great O-Kharn began his journey in the United Kingdom. He started out with three impressive victories and later changed his finisher to a Crossbow submission. O-Kharn won over American Superstar Shane Strickland at Revolution Pro Wrestling’s Summer Sizzler, extending his winning streak into the Rev Pro tapings. The Great O-Kharn and Rampage Brown won the RPW Tag Titles on October 13, 2019, together. On November 24 of the following month, O-Kharn and Brown defeated The Moonlight Express to unify the RPW Tag Titles and the SWE Tag Titles.

United Empire (2020–present)

O-Kharn, now going by the slightly modified ring name Great-O-Khan, made a comeback to NJPW on October 16, 2020, taking part in G1 Climax 30 and aiding Will Ospreay in his victory over Kazuchika Okada. He joined a new faction called The Empire along with Ospreay and his girlfriend Bea Priestley. O-Khan and Jeff Cobb, a new member of The Empire, would compete in the World Tag League in November 2020, where they finished with a 5–4 record. In January 2021, the faction would change its name to United Empire. At Wrestle Kingdom 15, O-Khan would compete against Hiroshi Tanahashi and lost. After Tanahashi won the NEVER Openweight Championship by defeating Shingo Takagi in the main event of The New Beginning in Nagoya, O-Khan attacked Tanahashi and then issued a challenge for the Castle Attack event the following month. Tanahashi would again defeat O-Khan at Castle Attack. O-Khan first competed in the New Japan Cup in March 2021, where he beat Tetsuya Naito in the first round before falling to Toru Yano in the second. Following this, O-Khan and Tetsuya Naito got into a feud that culminated in a single match at the Road To Wrestling Dontaku event on April 26. Naito prevailed over O-Kahn in this battle. O-Kahn’s participation in G1 Climax 31, his first appearance in the competition, was announced in September. He earned a total of 8 points by the end of the competition with a record of four victories and five losses. O-Khan unsuccessfully contested Toru Yano for the 2021 KOPW provisional championship at Power Struggle in amateur rules match. O-Khan’s 2021 came to an end with his teaming up with Aaron Henare in the World Tag League. The team’s final score was fourteen points, with seven victories and four defeats.

At Wrestle Kingdom 16, O-Khan lost to Sanada in a special singles match to start the year 2022. O-Khan, a competitor in the 2022 New Japan Cup, lost to Zack Sabre Jr. in the third round. During the Hyper Battle series on April 9, O-Khan and Cobb won the IWGP Tag-team Championships for the first time in either man’s career. At Wrestling Dontaku, the two lost the titles, bringing an end to their 22-day reign. On June 12 at Dominion 6.12 in Osaka-jo Hall, they reclaimed the titles. O-Khan was scheduled to compete in the B Block at the G1 Climax 32 in July after dropping the titles at Forbidden Door. O-Khan received 4 points overall, falling short of making it to the semifinals.

All Elite Wrestling (2022)

The ROH World Tag Team Championship match between FTR and Roppongi Vice was interrupted on the May 25, 2022 episode of Dynamite by O-Khan and Cobb, who attacked both teams and raised the championships to signal their intent to challenge for the titles. After O-Khan and Cobb and the rest of United Empire attacked both tag teams on the June 15 episode of Dynamite, Ospreay was scheduled to face Orange Cassidy and O-Khan and Cobb were put into a triple-threat tag-team Winner Takes All match at Forbidden Door for the newly won IWGP Tag Team Championships, FTR’s ROH World Tag Team Championships, and Roppongi Vice. Cobb and O-Khan both failed to win the ROH World Tag Team Titles at the event, and they also forfeited their IWGP Tag Team Titles to FTR.