24. Irwin Rivera
Mexican mixed martial artist Rivera is a UFC champion as well as a former TITAN FC champion. The bantamweight fighter made headlines in 2021 after he stabbed both of his sisters during a mental breakdown. Fortunately, the women survived the attempted murder and police took Rivera into custody. Meanwhile, they continued to support him. As a result, he went into a mental facility instead of jail.

@DrFreezePop tweeted: “This sounds awful. Either he was on some sort of strong narcotic or something went wrong in his brain. This isn’t normal at all. I hope his sisters are OK and he gets the help he needs.” There are numerous incidents where fighters suffer personality change as a result of extreme trauma to their brains. Only time will tell if this was the case for Rivera.