#5 The Undertaker and Brock Lesnar
Brock Lesnar was the man who was handpicked by The Undertaker to end his streak back at WrestleMania 30 more than five years ago and it appears that the two men are still known enemies on WWE TV to this day.
Lesnar and The Undertaker put on some impressive battles throughout 2015 when The Deadman returned to the ring and wanted to exact some revenge. It was a one-sided feud that was used to put Lesnar over as The Beast that he would later become, but there was no rivalry hotter that Lesnar and Taker when they brawled for around half an hour on an episode of Raw.
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Having seen what they could do to each other on WWE TV, many fans were shocked when images emerged of the two men sitting down to dinner together as part of WWE's trip to Saudi Arabia back in 2018.
It appears that even though The Undertaker and Brock Lesnar were fantastic at portraying a feud on WWE TV, the two of them had become close friends off-screen. Sometimes the best of friends manage to put on the best of feuds.