
14. Bela Karolyi
Karolyi was the coach from Hell. The Hungarian led the U.S. and Romanian gymnastics teams at different points in his career. His heyday was in 1976 and 1980 when he coached the latter team to glory. However, appalling details emerged of how he treated his athletes.

He allegedly starved his athletes, beat them, and denied them medical treatment. Some of the gymnasts even ate toothpaste before they went to bed. Karolyi had strong links to Larry Nasser, the reviled doctor who was convicted of a long and disgusting pattern of sexual abuse. He also coached U.S. star Mary Lou Retton (via Fox News).