#10 The American Bad Ass
The Undertaker missed almost eight months of action due to a torn pectoral muscle. When he finally returned in 2000, it was in a much different incarnation than fans had ever seen before.
The Undertaker no longer came out slowly walking to the ring while a funeral dirge played ominously in the back ground. Instead, he came out to Kid Rock's American Bad Ass which was a financially successful but critically lambasted cover of Metallica's Sad But True. While fans hated The Undertaker's theme song, and the one which replaced it which was by Limp Bizkit, they still cheered for The Undertaker's new character.
As the ABA character, The Undertaker would feud with Stone Cold Steve Austin, but mainly teamed with his kayfabe brother Kane as the Brothers of Destruction. Of course, because this is pro wrestling, it was also his brother Kane who would 'bury' the American Bad Ass forever after he helped Vince McMahon win a buried alive match against the Dead Man.