Michel Pereira has become the latest fighter to publicly call out veteran referee Herb Dean. Pereira joins a growing list of fighters who have voiced criticism of Dean's officiating.
Michel Pereira has added his voice to the chorus of fighters publicly criticizing veteran referee Herb Dean, making his displeasure known on June 28, 2026.
Pereira, known by his nickname "Demolidor," is a 32-year-old Brazilian middleweight fighting out of Overcome Academy. Currently ranked 15th in the middleweight division with a professional record of 32 wins and 15 losses, he is one of the more dynamic and high-volume strikers in the 185-pound weight class. He lands 4.46 significant strikes per minute at a 51 percent striking accuracy rate, and also contributes on the ground with 1.21 takedowns per 15 minutes and 0.7 submission attempts per 15 minutes. Standing six-foot-one with a 73-inch reach, the orthodox fighter has built a reputation for creative, entertaining bouts.
With his criticism, Pereira joins what has become a recurring pattern of fighters speaking out against Dean's officiating decisions. The specific grievance Pereira raised was not detailed, but the public nature of the callout continues a broader conversation within the sport about refereeing standards at the highest level of competition.
Why it matters
- Herb Dean is one of the most experienced and high-profile referees in MMA, making public criticism from ranked fighters a notable development
- Pereira's standing as a ranked middleweight gives his comments added weight within the division's community
- The growing list of fighters voicing similar concerns suggests increasing scrutiny on officiating accountability in the sport
