#1 The Streak
The Undertaker is considered to be the most respected WWE superstar of all time. He holds the record for most straight victories at Wrestlemania - 21 consecutive victories.
He has defeated top stars and Hall of Famers at Wrestlemania, including Ric Flair, Triple H and Shawn Michaels. However, he suffered two defeats at the hands of Brock Lesnar and most recently Roman Reigns.
Charlotte Flair to return and wrestle a CURRENT CHAMPION?
His defeat to Roman Reigns was announced as his retirement match. "The Deadman" has since kept off the squared circle. However, he is advertised to make an appearance at the 25th anniversary of Raw in January of next year.
Jim Ross described The Undertaker as the greatest big man in the history of wrestling. It is highly unlikely that anyone will surpass his Wrestlemania record of 21 straight victories, but anything is possible in the WWE.