Heading in to Sunday, 33 superstars have competed inside Hell in a Cell. That number will grow by two as Roman Reigns and Bray Wyatt make their official cell debuts (though Wyatt showed up inside the cell to take out Dean Ambrose last year). 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, 25 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 eight less than one-quarter have never won a world title: Dean Ambrose, Big Boss Man, Rikishi, Cody Rhodes, Ted DiBiase, Ryback, Heyman and Shane McMahon.This number will climb in the coming years, but six WWE Hall of Famers have been locked inside the cell: Austin, Michaels, Edge, Mick Foley and 2015 inductees Rikishi and Kevin Nash. Only one of them has won a cell match, but more on that later