#2 The Ministry of Darkness
The Attitude Era was an abstract time for WWE, with a lot of crazy things going down. One of them was The Undertaker forming an evil cult and brainwashing various Superstars, eventually kidnapping 'Stone Cold' Steve Austin and even Stephanie McMahon.
'Taker even tried to wed the Chairman's daughter in an incredibly disturbing and uncomfortable ceremony. That is what made this version of The Undertaker so good. He legitimately frightened everybody who was watching at the time, with the boldness of the act.
A top AEW star just called one of his colleagues 'spoiled' and 'narcissistic' HERE.
The Ministry of Darkness waged war with other factions like DX and the Nation of Domination, as The Undertaker truly flapped his creative wings. This was him at his satanic worst, the best heel he could possibly be. He was larger than life as the leader of the Ministry, even more so than normal.
The Higher Power debacle may have been a mess, but for the year that The Undertaker spent as an evil cult leader, he did some of the most interesting stuff he ever would in WWE.