The Undertaker ’s theme song (officially titled "American Bad Ass" ) was performed by Kid Rock and served as the entrance music for his biker persona between May 2000 and December 2000. Theme Highlights
: The track was released on Kid Rock's The History of Rock album and heavily samples the instrumental structure of Metallica's "Sad but True" .
: While replaced by Limp Bizkit's "Rollin'" in late 2000, "American Bad Ass" remains a fan favorite for its gritty, rebellious tone that matched Taker’s "Big Evil" persona.
: The Undertaker reused the Kid Rock theme for his post-retirement appearances in 2023 at WWE Raw is XXX and an episode of WWE NXT .