As soon as WWE announced the night two WrestleMania 40 main event could be Bloodline Rules, fans started fantasy casting who could potentially show up. It turns out the answer was a lot of people. The chaotic, overbooked, and way too much fun main event featured a shocking number of current and former stars who interfered to help one side of the other. They included but were not limited to The Rock, The Undertaker, John Cena, and Seth Rollins, who all combined to give fans one of the craziest and best WrestleMania main events of all time.