#1 The Undertaker announced his retirement at WWE Survivor Series
At last year's WWE Survivor Series, The Undertaker finally called it a day and decided to announce his retirement from in-ring competition officially.
Having been a massive part of WWE for about three decades, The Deadman has never failed to entertain the fans and established quite its own legacy.
In his final ever WWE match, which occurred at WrestleMania 36, The Undertaker also had the opportunity to present the fans with the very first Boneyard Match in WWE history.
In a match between The Phenom and The Phenomenal One, 'Taker put on an instant cinematic classic with AJ Styles and eventually beat the former WWE Champion to cap off the first night of a historic WM 36.
He then announced his retirement from pro-wrestling after his docuseries "Undertaker: The Last Ride" was released, but he remains a part of the active WWE Superstars list.
Even though he's listed as a current Superstar on WWE.com, it's quite unlikely that The Deadman will make a return to in-ring competition from here onwards.
However, the WWE Universe could be in for potential cameos from 'Taker from time to time.