It consists of leader Mads Krule Krügger, Ikuro Kwon, Janai Kai, Minoru Suzuki, Babathunder, and the Sentai Death Squad.

At War Chamber on March 29, 2024, Ikuro Kwon returned to MLW and assisted Contra Unit in attacking The Second Gear Crew (Matthew Justice and 1 Called Manders) and CozyMax (Shigeo Okumura and Satoshi Kojima).

Jacob Fatu and The Almighty Sheik were previously a part of a stable called the "Warbeast" with Brody King and Kevin Sullivan and competed on the independent circuit winning many tag team titles in various promotions.

[8][9] Sheik was repackaged as Josef Samael and he and Fatu made their MLW debut in a non-televised match by defeating local wrestlers Chico Adams and Kwame Nas at SuperFight.

[10] The pair made its televised debut at Intimidation Games by attacking Tom Lawlor after he retained the MLW World Heavyweight Championship against Low Ki in a steel cage match.

[19][20] The rivalry continued between Contra Unit and the team of Lawlor and Von Erichs, leading up to a War Chamber match at the namesake event.

[21] Contra Unit introduced a fourth member Ikuro Kwon on the August 3 episode of Fusion, who spit mist into Marshall Von Erich's eyes.

[23] Contra Unit would lose to Low Ki, Lawlor and Von Erichs in the titular match at War Chamber to settle the rivalry.

Contra would wreak havoc in Japan in November, leading to a six-man tag team match on the January 1, 2020 episode of Fusion, in which Fatu, Kwon and Gotch defeated Strong Hearts (Cima, El Lindaman and Shigehiro Irie).

Hart Foundation would begin feuding with Contra to avenge Contra's attack on Teddy Hart, which led to Davey Boy Smith, Jr. defeating Gotch in a No Holds Barred match on the February 1 episode of Fusion and Fatu retained the World Heavyweight Championship against Brian Pillman Jr. on the February 8 episode of Fusion.

Injustice member Kotto Brazil was one of the wrestlers injured in the assault which ended his MLW career as an explanation for his legitimate departure from the promotion.

Later in the show, there would be a Triple Threat Match for the Southern Honor Championship, with the champion Owen Knight defending against Cyrus The Destroyer and “The Priest of Punishment” Judas (aka Judais from the NWA).

The show would end with Krule attacking multiple members of the SHW staff working at ringside before posing on stage with the SHW Championship belt alongside Brooklyn and Black with the Contra flag At SuperFight on January 3, 2024, Krügger made his return to MLW, along with Contra Unit's Sentai Death Squad, attacking Jacob Fatu after his match with Yuji Nagata and hitting him with a Baklei bottle.

[32] At War Chamber on March 29, 2024, Ikuro Kwon returned to MLW and assisted Contra Unit in attacking The Second Gear Crew (Matthew Justice and 1 Called Manders) and CozyMax (Shigeo Okumura and Satoshi Kojima).

[35] At One Shot on December 5, 2024, Kwon and Suzuki lost the MLW World Tag Team Championship to CozyMax and at the same event, Krügger defeated the debuting Babathunder.