Paz is a five-time world champion known for his comeback story after a car crash, which was dramatized in the 2016 film "Bleed for This." He's accused of biting a man, knocking out his teeth and sending him to a hospital.
He appeared in Providence District Court on Wednesday but didn't enter a plea and was released on personal recognizance.
Witnesses tell police Paz accused the man of stealing $16,000.
The retired champ told reporters outside court, "I got robbed." When he was asked if he regretted taking the law into his own hands, he replied, "No."
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