#4 The Undertaker with Mick Foley

One of the most iconic moments of The Undertaker's career is him throwing Mick Foley aka Mankind off the top of the Hell in a Cell at King of the Ring 1998. The scene of Foley crashing from the top of the cell all the way through the announcer's table is forever etched in the mind of WWE fans.
In the picture above, Foley and The Undertaker can be seen sharing a light-hearted moment backstage at WWE Survivor Series 2020. Mick Foley is surely one of the greatest opponents of The Phenom's career.
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#3 The Undertaker with The Legit Boss

The Undertaker is such an iconic personality that much like us normal fans, even the current WWE Superstars are his massive fans. The amount of respect that The Phenom has earned over the last three decades is incomparable and goes on to tell how much he meant to the WWE locker room.
In the picture above, current SmackDown Women's Champion Sasha Banks can be seen having her fangirl moment with The Undertaker backstage at WWE Survivor Series 2020. Sasha defeated RAW Women's Champion Asuka in a 'Champion vs. Champion' match at the pay-per-view.