Honolulu, Hawaii, U.S
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Jeffrey Cobb is an American professional wrestler and former amateur wrestler who, as of May 2025, is signed to WWE, performing on the SmackDown brand under the ring name JC Mateo. He is best known for his eight-year (2017–2025) tenure in New Japan Pro-Wrestling (NJPW), where he was a member of United Empire, a one-time NEVER Openweight Champion, and a three-time IWGP Tag Team Champion. Cobb also wrestled for various promotions, including Lucha Underground (as the masked wrestler Matanza Cueto) where he held the Lucha Underground Championship, Ring of Honor (ROH) where he won the ROH Television Championship, and Pro Wrestling Guerrilla (PWG) where he captured both the PWG World and World Tag Team Championships and won the 2018 Battle of Los Angeles. As an amateur wrestler, Cobb represented Guam at the 2004 Summer Olympics, where he served as the nation’s flag bearer and competed in the men’s light heavyweight freestyle category before transitioning to professional wrestling in 2009.
NJPW Wrestle Grand Slam in MetLife Dome: Night 2
IMPACT Wrestling x NJPW: Multiverse United: Only The Strong Survive
Mark Hitchcock Memorial Wrestlecon Supershow 2023
NJPW 51st Anniversary Event & New Japan Cup 2023: Day 2
NJPW The New Beginning In Sapporo 2024 - Day 1
NJPW The New Beginning In Sapporo 2024 - Day 2
NJPW Dominion 6.9 In Osaka-Jo Hall ~ Best of the Super Junior 31 Final ~
NJPW Power Struggle ~ Super Junior Tag League 2023
AEW x NJPW Present Forbidden Door 2023: Zero Hour
NJPW 52nd Anniversary Event & New Japan Cup 2024: Day 1
NJPW Shingo Takagi's 20th Debut Anniversary Event
PROGRESS Chapter 67: Bourbon Is Also A Biscuit
Sorry You're Watching This: Jeff Cobb & Brody King
NJPW Wrestle Grand Slam in MetLife Dome: Night 1
NJPW x AEW x CMLL x ROH x STARDOM: Wrestle Dynasty
NJPW Superhuman Taiji Ishimori Gets Ridiculous
