Tomoyuki Oka
Actor
Born June 12, 1991 in Maebashi, Gunma Prefecture, Japan
Tomoyuki Oka, better known by his ring name Great-O-Khan, is a Japanese professional wrestler signed to New Japan Pro-Wrestling (NJPW), where he is a member of the United Empire stable. A former NJPW World Television Champion and final official King of Pro Wrestling Champion, he is also a four-time IWGP Tag Team Champion with Jeff Cobb (2x), Aaron Henare, and Callum Newman. In 2026, he won the NEVER Openweight 6-Man Tag Team Championship alongside Henare and Will Ospreay. In recognition of his in-ring ability, he received Tokyo Sports’ Technique Award in 2021, Fighting Spirit Award in 2022, and Best Tag Team Award in 2022 alongside United Empre stablemate Jeff Cobb. Oka began training with NJPW in 2015 and debuted in 2016 as part of the company’s Young Lion system before heading to the United Kingdom for an excursion with Revolution Pro Wrestling (RevPro), where he reinvented himself as Great-O-Khan and later captured the Undisputed British Heavyweight Championship. He returned to NJPW in 2020 as the first major member of Will Ospreay’s United Empire faction and quickly became one of the promotion’s most distinctive heavyweights, blending amateur wrestling, submission grappling, and his eccentric imperial persona. Known for his unconventional matches and crowd interaction, O-Khan gained further momentum in 2024 after reaching the G1 Climax playoffs and unsuccessfully challenging Tetsuya Naito for the IWGP World Heavyweight Championship. In 2025, he was ranked No. 137 in the Pro Wrestling Illustrated PWI 500.
Filmography
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NJPW G1 Climax 36 - Day 16
Great-O-Khan
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NJPW G1 Climax 36 - Day 15
Great-O-Khan
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NJPW G1 Climax 36 - Day 14
Great-O-Khan
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NJPW G1 Climax 36 - Day 13
Great-O-Khan
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NJPW G1 Climax 36 - Day 12
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NJPW G1 Climax 36 - Day 11
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NJPW G1 Climax 36 - Day 10
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NJPW G1 Climax 36 - Day 9
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NJPW G1 Climax 36 - Day 8
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NJPW G1 Climax 36 - Day 6
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NJPW G1 Climax 36 - Day 5
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NJPW G1 Climax 36 - Day 4
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NJPW G1 Climax 36 - Day 3
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NJPW G1 Climax 36 - Day 2
Great-O-Khan
NJPW G1 Climax 36 - Day 1
Great-O-Khan
NJPW Tiger Mask's Retirement Match
Great-O-Khan
NJPW Road to G1 Climax 36 - Day 5
Great-O-Khan
NJPW Road to G1 Climax 36 - Day 4
Great-O-Khan
NJPW Road to G1 Climax 36 - Day 3
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NJPW Road to G1 Climax 36 - Day 2
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NJPW Yuji Nagata Produce Blue Justice XVIII
Great-O-Khan
NJPW Road to G1 Climax 36 - Day 1
Great-O-Khan
NJPW Dominion 6.14 In Osaka-Jo Hall
Great-O-Khan
NJPW Best of the Super Junior 33 - Day 14 (Final)
Great-O-Khan
NJPW New Japan Road in Karatsu 2026 ~ Ignition to Dominion
Great-O-Khan
NJPW Wrestling Dontaku 2026 - Day 2
Great-O-Khan
NJPW Wrestling Dontaku 2026 - Day 1
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NJPW Road to Wrestling Dontaku 2026 - Day 8
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NJPW Road to Wrestling Dontaku 2026 - Day 7
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NJPW Road to Wrestling Dontaku 2026 - Day 6
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NJPW Road to Wrestling Dontaku 2026 - Day 5
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NJPW Road to Wrestling Dontaku 2026 - Day 4
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NJPW Road to Wrestling Dontaku 2026 - Day 3
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NJPW Road to Wrestling Dontaku 2026 - Day 2
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NJPW Road to Wrestling Dontaku 2026 - Day 1
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NJPW Sakura Genesis 2026
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NJPW New Japan Cup 2026 - Day 12 (Final)
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NJPW New Japan Cup 2026 - Day 10
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NJPW New Japan Cup 2026 - Day 9
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NJPW New Japan Cup 2026 - Day 8
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NJPW New Japan Cup 2026 - Day 7
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NJPW New Japan Cup 2026 - Day 5
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NJPW New Japan Cup 2026 - Day 4
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NJPW 54th Anniversary Event & New Japan Cup 2026 - Day 3
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NJPW New Japan Cup 2026 - Day 1
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NJPW The New Beginning In Osaka 2026
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NJPW Road to The New Beginning 2026 - Day 10
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NJPW Road to The New Beginning 2026 - Day 9
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NJPW Road to The New Beginning 2026 - Day 8
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NJPW Road to The New Beginning 2026 - Day 7
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NJPW Road to The New Beginning 2026 - Day 6
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NJPW Road to The New Beginning 2026 - Day 5
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NJPW Road to The New Beginning 2026 - Day 4
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NJPW Road to The New Beginning 2026 - Day 3
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NJPW Road to The New Beginning 2026 - Day 2
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NJPW Road to The New Beginning 2026 - Day 1
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NJPW Yuji Nagata Produce Blue Justice XVII ~ Aoyi Transition ~
Great-O-Khan
NJPW New Year Dash !! 2026
Great-O-Khan
NJPW Wrestle Kingdom 20
Great-O-Khan
NJPW Road to Tokyo Dome 2025 - Day 3
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NJPW Road to Tokyo Dome 2025 - Day 2
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NJPW Road to Tokyo Dome 2025 - Day 1
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NJPW World Tag League 2025 - Day 17 (Final)
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NJPW World Tag League 2025 - Day 16
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NJPW World Tag League 2025 - Day 15
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NJPW World Tag League 2025 - Day 14
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NJPW World Tag League 2025 - Day 13
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NJPW World Tag League 2025 - Day 12
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NJPW World Tag League 2025 - Day 11
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NJPW World Tag League 2025 - Day 10
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NJPW World Tag League 2025 - Day 9
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NJPW World Tag League 2025 - Day 8
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NJPW World Tag League 2025 - Day 7
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NJPW World Tag League 2025 - Day 6
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NJPW World Tag League 2025 - Day 5
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NJPW World Tag League 2025 - Day 4
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NJPW World Tag League 2025 - Day 3
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NJPW World Tag League 2025 - Day 2
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NJPW World Tag League 2025 - Day 1
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NJPW New Japan Road in Anjo 2025
Great-O-Khan
NJPW Hiroshi Tanahashi ~ Final Homecoming
Great-O-Khan
NJPW Destruction In Kobe 2025
Great-O-Khan
NJPW G1 Climax 35: Day 19 (Final)
Great-O-Khan
NJPW G1 Climax 35: Day 18
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NJPW G1 Climax 35: Day 17
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NJPW G1 Climax 35: Day 16
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NJPW G1 Climax 35: Day 15
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NJPW G1 Climax 35: Day 12
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NJPW G1 Climax 35: Day 11
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NJPW G1 Climax 35: Day 10
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NJPW G1 Climax 35: Day 9
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NJPW G1 Climax 35: Day 8
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NJPW G1 Climax 35: Day 7
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NJPW G1 Climax 35: Day 6
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NJPW G1 Climax 35: Day 5
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NJPW G1 Climax 35: Day 4
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NJPW G1 Climax 35: Day 3
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NJPW G1 Climax 35: Day 2
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NJPW G1 Climax 35: Day 1
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NJPW New Japan Soul 2025 - Day 8
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NJPW Tanahashi Jam
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NJPW Dominion 6.15 In Osaka-Jo Hall
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NJPW Wrestling Dontaku 2025 - Night 2
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NJPW Wrestling Dontaku 2025 - Night 1
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NJPW Wrestling Redzone in Hiroshima
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NJPW Sakura Genesis 2025
Great-O-Khan
NJPW New Japan Cup 2025 - Day 8
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NJPW New Japan Cup 2025 - Day 7
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NJPW New Japan Cup 2025 - Day 6
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NJPW New Japan Cup 2025 - Day 5
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NJPW New Japan Cup 2025 - Day 4
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NJPW New Japan Cup 2025 - Day 3
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NJPW New Japan Cup 2025 - Day 2
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NJPW New Japan Cup 2025 - Day 1
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NJPW The New Beginning In Osaka 2025
Great-O-Khan
NJPW Blue Justice XV - Wrestling Life 40th Anniversary Yuji Nagata
Great-O-Khan
NJPW New Year Dash!! 2025
Great-O-Khan
NJPW x AEW x CMLL x ROH x STARDOM: Wrestle Dynasty
Great-O-Khan
NJPW Wrestle Kingdom 19
Great-O-Khan
NJPW x STARDOM: Historic X-Over II
Great-O-Khan
NJPW Power Struggle ~ Super Junior Tag League 2024
Great-O-Khan
NJPW Destruction in Kobe 2024
Great-O-Khan
NJPW Road to Destruction 2024: Day 5
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NJPW Road to Destruction 2024: Day 4
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NJPW Road to Destruction 2024: Day 3
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NJPW Road to Destruction 2024: Day 2
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NJPW Shingo Takagi's 20th Debut Anniversary Event
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NJPW G1 Climax 34: Day 19 (Final)
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NJPW G1 Climax 34: Day 18
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NJPW G1 Climax 34: Day 17
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NJPW G1 Climax 34: Day 16
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NJPW G1 Climax 34: Day 15
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NJPW G1 Climax 34: Day 14
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NJPW G1 Climax 34: Day 13
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NJPW G1 Climax 34: Day 12
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NJPW G1 Climax 34: Day 11
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NJPW G1 Climax 34: Day 10
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NJPW G1 Climax 34: Day 9
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NJPW G1 Climax 34: Day 8
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NJPW G1 Climax 34: Day 7
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NJPW G1 Climax 34: Day 6
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NJPW G1 Climax 34: Day 5
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NJPW G1 Climax 34: Day 4
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NJPW G1 Climax 34: Day 3
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NJPW G1 Climax 34: Day 2
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NJPW G1 Climax 34: Day 1
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NJPW New Japan Soul 2024: Day 7
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NJPW New Japan Soul 2024: Day 5
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NJPW New Japan Soul 2024: Day 4
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NJPW New Japan Soul 2024: Day 3
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NJPW New Japan Soul 2024: Day 2
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NJPW New Japan Soul 2024: Day 1
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NJPW Dominion 6.9 In Osaka-Jo Hall ~ Best of the Super Junior 31 Final ~
Great-O-Khan
NJPW Wrestling Dontaku 2024 - Night 2
Great-O-Khan
NJPW Wrestling Dontaku 2024 - Night 1
Great-O-Khan
NJPW Sakura Genesis 2024
Great-O-Khan
NJPW New Japan Cup 2024 - Day 2
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NJPW 52nd Anniversary Event & New Japan Cup 2024 - Day 1
Great-O-Khan
NJPW The New Beginning In Sapporo 2024 - Day 2
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NJPW The New Beginning In Sapporo 2024 - Day 1
Great O-Khan
NJPW The New Beginning in Osaka 2024
Great O-Khan
NJPW The New Beginning in Nagoya
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NJPW New Year Dash!! 2024
Great-O-Khan
NJPW Power Struggle ~ Super Junior Tag League 2023
Great-O-Khan
NJPW Royal Quest III
Great-O-Khan
NJPW Destruction In Ryogoku 2023
Great-O-Khan
NJPW Destruction In Kobe 2023
Great-O-Khan
NJPW G1 Climax 33: Day 19 (Final)
Great-O-Khan
NJPW G1 Climax 33: Day 18
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NJPW G1 Climax 33: Day 17
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NJPW G1 Climax 33: Day 16
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NJPW G1 Climax 33: Day 15
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NJPW G1 Climax 33: Day 14
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NJPW G1 Climax 33: Day 13
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NJPW G1 Climax 33: Day 11
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NJPW G1 Climax 33: Day 9
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NJPW G1 Climax 33: Day 7
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NJPW G1 Climax 33: Day 5
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NJPW G1 Climax 33: Day 3
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NJPW G1 Climax 33: Day 1
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RevPro Epic Encounter 2023
Great-O-Khan
NJPW Dominion 6.4 in Osaka-jo Hall
Great-O-Khan
NJPW Wrestling Dontaku 2023
Great-O-Khan
NJPW Sakura Genesis 2023
Great-O-Khan
NJPW Road to Sakura Genesis 2023 - Day 2
Great-O-Khan
NJPW New Japan Cup 2023: Day 4
Great-O-Khan
NJPW New Japan Cup 2023: Day 3
Great-O-Khan
NJPW 51st Anniversary Event & New Japan Cup 2023: Day 2
Great-O-Khan
NJPW The New Beginning in Osaka 2023
Great-O-Khan
NJPW The New Beginning In Sapporo 2023 - Day 2
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NJPW The New Beginning In Sapporo 2023 - Day 1
Great-O-Khan
NJPW New Year Dash !! 2023
Great-O-Khan
NJPW Wrestle Kingdom 17: Night 1 in Tokyo Dome
Great-O-Khan
NJPW Wrestle Kingdom 17 Pre-Show
Great O-Khan
RevPro Uprising 2022
Great-O-Khan
NJPW x STARDOM: Historic X-Over
Great-O-Khan
NJPW Battle Autumn 2022 - Day 16
Great-O-Khan
NJPW Declaration of Power
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NJPW Royal Quest II - Night 2
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NJPW Burning Spirit 2022 - Day 14
Great-O-Khan
NJPW G1 Climax 32: Day 20 (Final)
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NJPW G1 Climax 32: Day 17
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NJPW G1 Climax 32: Day 15
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NJPW G1 Climax 32: Day 14
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NJPW G1 Climax 32: Day 13
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NJPW G1 Climax 32: Day 12
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NJPW G1 Climax 32: Day 11
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NJPW G1 Climax 32: Day 10
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NJPW G1 Climax 32: Day 9
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NJPW G1 Climax 32: Day 8
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NJPW G1 Climax 32: Day 7
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NJPW G1 Climax 32: Day 6
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NJPW G1 Climax 32: Day 5
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NJPW G1 Climax 32: Day 4
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NJPW G1 Climax 32: Day 3
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NJPW G1 Climax 32: Day 2
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NJPW G1 Climax 32: Day 1
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AEW x NJPW Presents Forbidden Door 2022
Great-O-Khan
NJPW Dominion 6.12 In Osaka-Jo Hall
Great-O-Khan
NJPW Capital Collision 2022
Great-O-Khan
NJPW Wrestling Dontaku 2022
Great-O-Khan
NJPW Windy City Riot 2022
Great O-Khan
NJPW New Japan Cup 2022 - Day 15 (Final)
Great-O-Khan
NJPW New Japan Cup 2022 - Day 14
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NJPW New Japan Cup 2022 - Day 13
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NJPW New Japan Cup 2022 - Day 12
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NJPW New Japan Cup 2022 - Day 10
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NJPW New Japan Cup 2022 - Day 9
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NJPW New Japan Cup 2022 - Day 8
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NJPW New Japan Cup 2022 - Day 7
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NJPW New Japan Cup 2022 - Day 6
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NJPW New Japan Cup 2022 - Day 5
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NJPW New Japan Cup 2022 - Day 4
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NJPW New Japan Cup 2022 - Day 3
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NJPW New Japan Cup 2022 - Day 2
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NJPW New Years Golden Series 2022 - Day 14
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NJPW New Years Golden Series 2022 - Day 10
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NJPW New Years Golden Series 2022 - Day 9
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NJPW New Years Golden Series 2022 - Day 6
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NJPW New Years Golden Series 2022 - Day 2
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NJPW New Years Golden Series 2022 - Day 1
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NJPW Wrestle Kingdom 16: Night 2
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NJPW Wrestle Kingdom 16: Night 1
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NJPW Power Struggle 2021
Great-O-Khan
NJPW G1 Climax 31: Day 19 (Final)
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NJPW G1 Climax 31: Day 17
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NJPW G1 Climax 31: Day 15
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NJPW G1 Climax 31: Day 13
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NJPW G1 Climax 31: Day 11
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NJPW G1 Climax 31: Day 9
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NJPW G1 Climax 31: Day 7
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NJPW G1 Climax 31: Day 5
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NJPW G1 Climax 31: Day 3
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NJPW G1 Climax 31: Day 1
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NJPW Wrestle Grand Slam in MetLife Dome: Night 2
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NJPW Wrestle Grand Slam in MetLife Dome: Night 1
GREAT-O-KHAN
NJPW Wrestle Grand Slam In Tokyo Dome
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NJPW Wrestling Dontaku 2021 - Night 2
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NJPW Wrestling Dontaku 2021 - Night 1
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NJPW Sakura Genesis 2021
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NJPW New Japan Cup 2021 - Day 13 (Final)
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NJPW New Japan Cup 2021 - Day 12
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NJPW New Japan Cup 2021 - Day 11
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NJPW New Japan Cup 2021 - Day 9
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NJPW New Japan Cup 2021 - Day 7
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NJPW New Japan Cup 2021 - Day 6
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NJPW New Japan Cup 2021 - Day 5
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NJPW New Japan Cup 2021 - Day 4
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NJPW New Japan Cup 2021 - Day 3
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NJPW New Japan Cup 2021 - Day 2
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NJPW New Japan Cup 2021 - Day 1
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NJPW 49th Anniversary Show
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NJPW Castle Attack 2021 - Day 2
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NJPW Castle Attack 2021 - Day 1
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NJPW The New Beginning in Nagoya
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NJPW New Year Dash !! 2021
The Great O-Khan
NJPW Wrestle Kingdom 15: Night 1
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NJPW G1 Climax 30: Day 19 (Final)
Great-O-Khan
RevPro High Stakes 2020
The Great-O-Kharn
RevPro Uprising 2019
The Great-O-Kharn
All Elite Wrestling: Dynamite
Great O-Khan
RevPro Uprising 2018
The Great-O-Kharn
RevPro & NJPW: Global Wars 2018
The Great-O-Kharn
My Dad Is a Heel Wrestler
NJPW Best of the Super Junior 25 - Day 1
Tomoyuki Oka
NJPW Wrestling Dontaku 2018 - Night 2
Tomoyuki Oka
NJPW Wrestling Dontaku 2018 - Night 1
Tomoyuki Oka
NJPW New Japan Cup 2018 - Day 4
Tomoyuki Oka
NJPW New Japan Cup 2018 - Day 3
Tomoyuki Oka
NJPW New Japan Cup 2018 - Day 2
Tomoyuki Oka
NJPW New Japan Cup 2018 - Day 1
Tomoyuki Oka
NJPW 46th Anniversary Show
Tomoyuki Oka
NJPW The New Beginning In Sapporo 2018 - Day 2
Tomoyuki Oka
NJPW New Year Dash !! 2018
Tomoyuki Oka
NJPW Destruction in Kobe 2017
Tomoyuki Oka
NJPW G1 Climax 27: Day 17
Tomoyuki Oka
NJPW G1 Climax 27: Day 16
Tomoyuki Oka
NJPW G1 Climax 27: Day 15
Tomoyuki Oka
NJPW G1 Climax 27: Day 14
Tomoyuki Oka
NJPW G1 Climax 27: Day 13
Tomoyuki Oka
NJPW G1 Climax 27: Day 12
Tomoyuki Oka
NJPW G1 Climax 27: Day 10
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NJPW G1 Climax 27: Day 9
Tomoyuki Oka
NJPW G1 Climax 27: Day 8
Tomoyuki Oka
NJPW G1 Climax 27: Day 6
Tomoyuki Oka
NJPW G1 Climax 27: Day 4
Tomoyuki Oka
NJPW Dominion 6.11 in Osaka-jo Hall
Tomoyuki Oka
NJPW Wrestling Dontaku 2017
Tomoyuki Oka
NJPW Wrestling Toyonokuni 2017
Tomoyuki Oka
NJPW Sakura Genesis 2017
Tomoyuki Oka
NJPW New Japan Cup 2017 - Day 1
Tomoyuki Oka
NJPW 45th Anniversary Show
Tomoyuki Oka
NJPW The New Beginning In Sapporo 2017
Tomoyuki Oka
Stardom on Stardom World
Great-O-Khan
NJPW New Japan Cup
Great-O-Khan