When you take a lot of punches to the face, it can mess things up in your brain. And when your brain doesn’t work right, you can be scary. Ike Ibeabuchi is an enormous Nigerian-born boxer who was heralded as “the next Tyson” for his incredible physicality.
When he beat the undefeated David Tua in 1997 in one of the most brutal bouts ever seen, everybody thought he was on his way to the top. Unfortunately, he then lost his mind and became convinced that demons were real and plaguing him, and his dementia led to him brutally attacking several people. He’s currently in jail for a 1999 assault on a woman in Las Vegas.