
Tomoyuki Oka
- Date of Birth: 1991-06-12
- Place of Birth: Maebashi, Gunma Prefecture, Japan
Biography
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. He also wrestl... 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. He also wrestles for NJPW's United Kingdom based partner promotion Revolution Pro Wrestling (RevPro), where he is the former Undisputed British Heavyweight Champion. In NJPW, he is a two-time IWGP Tag Team Champion (with Jeff Cobb).

NJPW Sakura Genesis 2024
Action • 2024 April

NJPW x STARDOM: Historic X-Over II
• 2024 November

NJPW The New Beginning In Osaka 2025
• 2025 February

NJPW Blue Justice XV - Wrestling Life 40th Anniversary Yuji Nagata
• 2025 January

NJPW G1 Climax 34: Day 12
• 2024 August

NJPW Wrestling Dontaku 2018 - Night 1
Action • 2018 May

NJPW The New Beginning In Sapporo 2023 - Night 2
• 2023 February

NJPW G1 Climax 32: Day 11
• 2022 August

NJPW G1 Climax 33: Day 15
• 2023 August

NJPW G1 Climax 34: Day 8
• 2024 July