Heading in to Sunday, 31 superstars have competed inside Hell in a Cell. That number will grow by two as Ambrose and Rollins make their cell debuts. The list of participants is varied, with people like Vince and Shane McMahon and Paul Heyman having official matches inside the cell. But that list also includes main eventers such as the Rock, Undertaker, Stone Cold Steve Austin, Brock Lesnar and Shawn Michaels. In fact, 24 former world champions have competed in Hell in a Cell. That list does include former WWE champ Mr. McMahon. Still, its interesting that of all the competitors who have battled inside the cell, only seven less than one-quarter have never won a world title: Big Boss Man, Rikishi, Cody Rhodes, Ted DiBiase, Ryback, Heyman and Shane McMahon. This number will climb in the coming years, but four WWE Hall of Famers have been locked inside the cell: Austin, Michaels, Edge and Mick Foley. Only one of them has won a cell match, but more on that later