Oskar Leube

Oskar Münchow (born 14 July 1998) is a German professional wrestler. He is signed to New Japan Pro-Wrestling (NJPW), where he performs mononymously as Oskar (stylized in all caps and shortened from his previous ring name Oskar Leube) and is a member of Unbound Co.. He is a former one-time IWGP Tag Team Champion with fellow stablemate Yuto-Ice as the Knock Out Brothers. He has also appeared for the German promotion Westside Xtreme Wrestling, where he is a former wXw Academy Trophy Champion.

Professional wrestling career

Early career (2019–2022) In January 2019, Münchow began training at the Fale Dojo in New Zealand. It was also around that time, he would befriend his future tag partner in Yuto Nakashima who was also training in the dojo. Two months later, on 3 March, Münchow had his debut professional wrestling match. On 5 March 2022, at wXwNOW & Friends, he won the wXw Academy Trophy Championship defeating Goldenboy Santos.

New Japan Pro-Wrestling (2022–present)

Young Lion and European excursions (2022–2025)

On 20 November 2022, at Historic X-Over, Münchow made his NJPW debut under the ring name Oskar Leube. At the event, Leube, Kosei Fujita, Nakashima, Ryohei Oiwa lost to Alex Coughlin, Clark Connors, Gabriel Kidd and Kevin Knight. Three days later, at night two of the Super Junior Tag League, Leube had his first win in NJPW when he teamed up with Fujita to defeat Oiwa and Nakashima. Throughout 2023, Leube would continue to wrestle primary in the undercard and opening matches as a Young Lion as he gained experience, and during that time, he and Nakashima would regularly team up, and soon the duo would go by the tag team name Young Blood. At New Year's Dash 2024, he had his final match as a Young Lion in New Japan where he and Nakashima lost to then IWGP Tag Team Champions and Strong Openweight Tag Champions in Hikuleo and El Phantasmo, as it was announced he was going on excursion together with Nakashima. The two would go to Europe where they would begin competing in promotions such as RevPro Wrestling and Oskar's old home promotion in wXw.

Knock Out Brothers (2025–present)

On the final night of G1 Climax 35 on August 17, 2025, Bullet Club War Dogs leader David Finlay introduced Leube (now performing as Oskar) and Nakashima (now known as Yuto-Ice) as the newest members of Bullet Club as they attacked Satoshi Kojima, Taichi and Katsuya Murashima. Oskar and Yuto also changed their tag team name to "Knock Out Brothers". At Destruction in Kobe, Oskar and Yuto defeated Taichi and Tomohiro Ishii to win the IWGP Tag Team Championship, marking their first championship in NJPW.

After Wrestle Kingdom 20, at New Year Dash!!, David Finlay and Yota Tsuji announced the dissolution of Bullet Club and Mushozoku, replacing the alliance with Unbound Company, which was a complete merger. Knock Out Brothers would successfully defend their titles against various teams such as RoughStorm, TMDK, and Bishamon. On June 14 at Dominion 6.14 in Osaka-jo Hall, Knock Out Brothers lost the titles to United Empire's Great-O-Khan and Henare, ending their reign at 259 days. On July 6, Oskar defeated Yujiro Takahashi to qualify for the G1 Climax as part of B-Block, his first time competiting in the tournament. Oskar finished the tournament with 8 points and failed to advance to the semi-finals.

European independent circuit (2024–2025) At RevPro’s High Stakes 2024 event, Leube and Nakashima defeated Kieron Lacey and Mark Trew in a tag team match. They also participated in a tag team match to defeat David Francisco and Goldenboy Santos in a street fight at a subsequent RevPro event. In wXw, Nakashima and Leube won the wXw World Tag Team Championship at the World Tag Team Festival in October 2024, defeating KXS (Axel Tischer and Fast Time Moodo) in the finals. In March 2025, they lost the titles to Big Bucks (Alex Duke and Norman Harras), ending their reign at 152 days.

Championships and accomplishments

New Japan Pro-Wrestling IWGP Tag Team Championship (1 time) – with Yuto-Ice Pro Wrestling Holland PWH Tag Team Championship (1 time) – with Yuto-Ice Westside Xtreme Wrestling wXw Academy Trophy Championship (1 time) wXw World Tag Team Championship (1 time) – with Yuto Nakashima wXw World Tag Team Festival (2024) – with Yuto Nakashima