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The Daily Insight

UFC: Who Is Casey O’Neill? Meet The MMA Fighter On Instagram

Author

James Bradley

Published Feb 27, 2026

Casey O’Neill is a Scottish-Australian Mixed Martial Artist (MMA) fighter who competes in the Flyweight division in the Ultimate Fighting Championship (UFC).

Casey O’Neill, popularly known as King Casey, gained immense popularity over the years and ranked 15th in the UFC women’s flyweight ranking.

At 15, she first competed in an amateur MMA fight and was defected. After that, she spent two years in training, and at 19, she returned in amateur MMA and got five consecutive wins.

Casey O’Neill made her professional debut on April 5, 2019, against Amira Hafizovic at the Eternal MMA 43 event and won the fight via a unanimous decision.

On February 20, 2021, she debuted in UFC and won a second-round knockout victory over Shana Dobson at UFC Fight Night: BlaydesvsLewis.

Explore Casey O’Neill Parents & Nationality

Casey O’Neill was born in Irvine, Scotland, on October 7, 1997; She is currently 24 years old and belongs to Australian and Scottish nationality.

Her full name is Casey Cameron O’Neill. She spent her childhood in Kilmarnock.

Her father’s name is Cam, who was a professional kickboxer. So, due to her father’s influence, she started her training in kickboxing at four.

Casey O’Neill’s family migrated to Australia’s Gold Coast when she was 10, and at 13, she began training in other martial arts like Brazilian jiu-jitsu.

Her father was her biggest motivator and supporter. With the help of her father’s guidance, she competed in her first amateur MMA fight at 15.

Net Worth Of Casey O’Neill: How Much Does She Earn?

Casey O’Neill’s actual net worth is under review, but it is around $1 million.

She is one of the rising fighters from the UFC Flyweight division, and her income will rise in the future.

UFC fighters get their salary based on their fight night, but it does not matter whether they win or lose. The winner also gets a win bonus almost equal to the base salary.

The athlete holds an impressive winning record. She has not lost any battles. Out of eight wins, she won three by knockout, two by submission, and three by decision.

Meet Casey O’Neill On Instagram

Casey O’Neill is pretty active on social media handles, especially Instagram. She has a verified Instagram account @kingcaseymma.

There are 584 posts with 84.8K followers on her Instagram handle. She posts pictures of her training, games, vacations, and friends.

She updates her fans about her life events and activities; she is in a relationship with Ty Gwerder, a fighter from the Bellator MMA who plays from the Middleweight division. She posts adorable pictures with him with cute captions.

Casey O’Neill got scheduled to face Roxanne Modafferi on February 12, 2022, at UFC 271.