#1 - Triple H - 13 losses
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The COO of the WWE and the brainchild behind WWE's developmental territory, WWE NXT, Triple H holds the record for the most number of losses in WrestleMania history with the Game losing 13 matches at the Show of Shows.
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His last WrestleMania victory was against Sting when the Hunter defeated the Icon at WrestleMania 31. The Game then lost his WrestleMania 32 match against Roman Reigns and then he let Seth Rollins go over him at WrestleMania 33. His last WrestleMania defeat at WrestleMania 34 where he teamed up with Stephanie McMahon in a losing cause against Kurt Angle and Ronda Rousey. Superstars like Daniel Bryan, The Undertaker, Randy Orton, John Cena, Batista, Chris Benoit have defeated the King of Kings at WrestleMania and the common thing between all the above superstars is that all of them went to be legends and this also shows how much selfless Triple H is.