Tomoyuki Oka

Known for ActingBorn 1991-06-12 (age 35)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.Read more

Movies & web series

NJPW New Japan Soul 2025 - Day 8

NJPW Power Struggle ~ Super Junior Tag League 2023

NJPW Sakura Genesis 2017

NJPW Dominion 6.11 in Osaka-jo Hall

Stardom on Stardom World

NJPW G1 Climax 33: Day 1

NJPW Dominion 6.12 In Osaka-Jo Hall

AEW x NJPW Presents Forbidden Door 2022

NJPW Wrestle Kingdom 15: Night 1

NJPW Sakura Genesis 2026

NJPW G1 Climax 33: Day 11

NJPW G1 Climax 33: Day 13

NJPW Wrestle Kingdom 20

NJPW The New Beginning In Osaka 2026

NJPW Wrestling Dontaku 2026 - Day 2

NJPW Best of the Super Junior 33 - Day 14 (Final)

NJPW Wrestle Kingdom 19

NJPW Wrestling Dontaku 2022

NJPW x STARDOM: Historic X-Over

All Elite Wrestling: Dynamite

NJPW G1 Climax 33: Day 16

NJPW G1 Climax 33: Day 17

My Dad Is a Heel Wrestler

NJPW New Year Dash !! 2026

NJPW Road to The New Beginning 2026 - Day 6

NJPW New Japan Cup 2026 - Day 1

NJPW New Japan Cup 2026 - Day 7

NJPW New Japan Cup 2026 - Day 8

NJPW New Japan Cup 2026 - Day 9

NJPW New Japan Cup 2026 - Day 12 (Final)

NJPW Wrestling Dontaku 2026 - Day 1

NJPW x AEW x CMLL x ROH x STARDOM: Wrestle Dynasty

NJPW Tanahashi Jam

NJPW Sakura Genesis 2024

NJPW x STARDOM: Historic X-Over II

NJPW Wrestle Kingdom 17: Night 1 in Tokyo Dome

NJPW Wrestling Dontaku 2021 - Night 1

NJPW Wrestling Dontaku 2021 - Night 2

NJPW New Year Dash !! 2018

NJPW Wrestling Dontaku 2017

NJPW Road to The New Beginning 2026 - Day 1

NJPW Road to The New Beginning 2026 - Day 10

NJPW New Japan Cup 2026 - Day 10

NJPW The New Beginning In Osaka 2025

NJPW Blue Justice XV - Wrestling Life 40th Anniversary Yuji Nagata

NJPW G1 Climax 34: Day 12

NJPW Road to The New Beginning 2026 - Day 2

NJPW 54th Anniversary Event & New Japan Cup 2026 - Day 3