Tomoyuki Oka (岡 倫之 Oka Tomoyuki, born June 12, 1991) is a Japanese professional wrestler signed to New Japan Pro-Wrestling (NJPW), where he currently performs under the ring name Great-O-Khan (グレート-O-カーン Gurēto-O-Kan).
Oka made his debut for NJPW on January 3, 2017, and worked as a "Young Lion" over the following two years. In June 2018, Oka renamed "(The) Great O-Kharn", was sent to the British Revolution Pro Wrestling (RevPro) promotion to further his wrestling training and gain international experience, a tradition with NJPW "Young Lions". Afterwards, O-Kharn devoloped an undefeated streak. In November 2019, Oka won his first professional wrestling championship, the Undisputed British Tag Team Championship, working for RPW until the fall of 2020, with O-Kharn returning to NJPW in October 2020, under his excursion gimmick, aligning himself with Bea Priestley and Will Ospreay in a stable named United Empire.
Oka excelled in amateur wrestling while in school, winning the All Japan Wrestling Championship in the 120 kg Freestyle class in 2012. Oka met Takaaki Kidani, president of Bushiroad in 2013, and was signed to New Japan Pro Wrestling (NJPW) shortly after, but didn't begin training until 2015 as he was still in university at the time. Oka is an avid anime fan, citing Milky Holmes as his favorite anime. In the past, Oka has also competed in judo, karate, sambo, kickboxing, pankration, jiu-jitsu and mixed-martial arts.
Professional wrestling career
New Japan Pro-Wrestling (2016–2018)
Oka began training with New Japan Pro Wrestling (NJPW) in 2015, and made his in-ring debut on February 25, 2016, losing to fellow rookie Katsuya Kitamura in a dark match. Oka once again lost to Kitamura in a dark match on September 1. Oka made his televised debut on January 3, 2017, losing to his trainer Yuji Nagata. Oka once again lost to Nagata on January 27, January 31, and February 2. On February 9, Oka, Yoshitatsu and Henare were defeated by Nagata, Hirai Kawato and Jushin Thunder Liger. Oka's first victory came on February 21, when he defeated Henare via referee stoppage after Henare suffered an ankle injury during their match. On April 13 at Lion's Gate Project 4, he teamed with his trainer Yuji Nagata to defeat Katsuya Kitamura and Manabu Nakanishi. On July 22, he and Nagata defeated Kitamura and Hiroshi Tanahashi. Oka then formed a tag team named "Monster Rage" with Kitamura. From October 12 to December 21, Oka took part in the 2017 Young Lion Cup, where he finished third with a record of three wins and two losses. Oka's final match in NJPW took place on June 24, 2018 at Kizuna Road, teaming with Yuji Nagata in a winning effort against Manabu Nakanishi and Shota Umino.
Foreign excursion (2018–2020)
Before going on an excursion Oka started using the Mongolian chop as well stating that he would change. In June, Oka began his excursion debuting for England's Revolution Pro Wrestling on June 30 at Strong Style Evolved UK defeating Shota Umino, under the ring name "(The) Great O-Kharn", named after the ruler of the Mongolian Empire Genghis Khan, while during his entrances he wears a traditional Mongolian deel. Afterwards, O-Kharn developed an undefeated streak, never losing a match by submitting or being pinned. This undefeated streak included major victories over Shane Strickland, Mark Davis and Martin Kirby. During his undefeated streak, O-Kharn began being managed by Gideon Grey, who also became his spokesperson. In November 2019, O-Kharn, Grey, Rampage Brown and Sha Samuels formed a stable named "The Legion". On November 9, O-Kharn and Brown defeated Dan Magee and Kurtis Chapman to win the vacant Undisputed British Tag Team Championship. On November 24, O-Kharn and Brown successfully defended the Undisputed British Tag Team Championship and defeated Moonlight Express (MAO and Mike Bailey) for the SWE Tag Team Championship in a title unification match.
Return to New Japan Pro-Wrestling (2020–Present)
On October 16, Oka made his surprise return from excursion, under the ring name "Great-O-Khan", named after the ruler of the Mongolian Empire Genghis Khan, alongside Bea Priestley by interfering and helping Will Ospreay defeat Kazuchika Okada in his final block match in the 2020 G1 Climax. After Ospreay left CHAOS, O-Khan and Priestley were announced as part of Ospreay's newest stable. The following day, O-Khan wrestled his return match, where he and Ospreay defeated Okada and Sho in a tag team match. The new group was subsequently named "The Empire". On November 7, at Power Struggle, O-Khan was defeated by Kazuchika Okada by referee stoppage, as part of The Empire's feud with Okada, ending O-Khan's undefeated streak at 861 days, or almost two and a half years. From November 15 until December 6, O-Khan and The Empire's newest member Jeff Cobb took part in the 2020 World Tag League, finishing the tournament with a record of five wins and four losses, failling advance to the finals of the tournament. Later in the year, O-Khan began his first major feud in New Japan with former IWGP Heavyweight Champion Hiroshi Tanahashi, after having injured his leg during the 2020 World Tag League. The rivalry between O-Khan and Tanahashi culminated in a match on January 4, 2021, on the first night of Wrestle Kingdom 15 in Tokyo Dome, where Tanahashi was victorious.
Following the event, on January 6 at New Years Dash, The Empire entered a rivalry with Tencozy (Hiroyoshi Tenzan and Satoshi Kojima). At the New Years Dash, The Empire faced Tencozy and Yota Tsuji in a winning effort. Afterwards, The Empire attacked Tencozy, with Hiroyoshi Tenzan being stretchered out of the arena, after O-Khan layed him out with his finishing move the TTD. Following the O-Khan use of the Mongolian Chop, the rivalry between O-Khan and Tenzan culminated into a match on January 30 at The New Beginning in Nagoya, where the loser of the match would be banned from using the Mongolian Chop, leading O-Khan to face Tenzan in a winning effort. Later that night, O-Khan attacked Hiroshi Tanahashi and challenged him to a title match for the NEVER Openweight Championship. On February 28, at Castle Attack, O-Khan unsucessfully challenged Tanahashi for the NEVER Openweight Championship. In March, O-Khan took part in the 2021 New Japan Cup, picking up a surprise victory over former IWGP Heavyweight and IWGP Intercontinental Champion Tetsuya Naito on March 4, before being eliminated from the tournament by Toru Yano on March 11 at the second round.
- Finishing moves
- Eliminator (Iron claw slam)
- Iron claw hold
- TTD – Tenzan Tombstone Driver (Kneeling cradle reverse piledriver) – 2021; parodied from Hiroyoshi Tenzan
- Signature moves
- Bicycle kick
- Boston crab
- Camel clutch
- Lifting reverse STO
- Mongolian chop
- Oozora Subaru Sheep Killer / Oozora Subaru-style Neck and Backbreaker (Standing iron claw backbreaker hold)
- Overhead neckbreaker
- Shoulder tackle
Championships and accomplishments
- Pro Wrestling Illustrated
- Ranked No. 427 of the top 500 singles wrestlers in the PWI 500 in 2018
- Revolution Pro Wrestling
- Undisputed British Tag Team Championship (1 time) – with Rampage Brown
- SWE Tag Team Championship (1 time) – with Rampage Brown
- Otaku pro wrestler Tomoyuki Oka makes no apologies for blurring the nerd/jock boundary (2014-04-15).
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