Demetrious “Mighty Mouse” Johnson is considered by many to be the greatest mixed martial artist of all time.

Soon after graduating from Washington High School in 2005, the wrestling standout started training in various martial arts disciplines at AMC Pankration. A year later, he made his amateur debut and ripped through the competition.

Evidently, it was a sign of things to come.

Johnson turned pro in 2009, continued to taste success, and eventually joined the Ultimate Fighting Championship, where he would become the inaugural UFC Flyweight World Champion and make 11 record-breaking title defenses.

In 2018, Johnson was traded to ONE Championship and continued to set the martial arts world on fire. “Mighty Mouse” made a statement early in his promotional tenure, winning the ONE Flyweight MMA World Grand Prix in 2019.

Though he suffered the first knockout loss of his entire career to Adriano Moraes in 2021, Johnson evened the score to capture the ONE Flyweight MMA World Title in August 2022. And at the ONE's first United States event in May 2023, “Mighty Mouse” beat his Brazilian rival once again in their historic World Title trilogy bout to cement his status as the MMA GOAT.

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