The little girl doing the contortionist act during Bianca Belair's entrance had lost her mother just earlier that same day. She gamely continued on with her performance despite this. At the press conference immediately after the event, Triple H became visibly emotional when referring to her.
Roman Reigns is the first wrestler ever to defend a World Championship under the same reign over three consecutive WrestleManias.
The Usos vs Sami Zayn and Kevin Owens was first tag team title match to ever main event WrestleMania since WrestleMania 1 when Mr. T and Hogan faced Roddy Piper and Paul Ordnorff.
First WrestleMania without Sasha Banks since WrestleMania 32.
First Hell in a Cell match at WrestleMania since WrestleMania 32, fourth overall, and the first not to feature The Undertaker as one of the competitors.