William "The Refrigerator" Perry
Do you really need to read more when Perry's nickname is "The Refrigerator?" The Fridge phenomenon took off during the Bears' Super Bowl XX run, but he was only about 310 pounds at the time. Just a few years later, Perry led coach Mike Ditka to be concerned when he reported to camp at 377 pounds (and this after having reportedly been at around 420 in the offseason). Perry has dealt with a number of health issues, some related to his weight, since leaving the NFL in 1994.