#2 Kevin Owens

The main crux of the story for Kevin Owens vs Seth Rollins at WrestleMania was that KO hadn't received a WrestleMania moment, while Rollins would get them every year. Also, the fact that the match was taking place at the Performance Center lit a fire under the Quebecer.
Their match on Night 1 was great, the culmination of a long-term story involving the likes of Samoa Joe, Murphy and half of the RAW tag team division. On Saturday, Owens initially won by disqualification after Rollins hit him with the ring bell. However, the match was restarted as a No DQ Match.
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A few moments after that, KO would earn his WrestleMania moment in the grandest way possible. He put the 'Monday Night Messiah' through the announce table, after leaping from the top of the WrestleMania sign.
So after disappointment in the form of a lost title, a lost job, a lost opportunity and even getting called out by Vince McMahon, Kevin Owens finally had a happy WrestleMania memory. This truly was KO Mania.