“Shut up. He was the greatest frontman to ever step in front of a microphone. But he is … crazy. And I can vouch for that.” Green Day’s Billie Joe Armstrong’s reaction to the audience’s boos when Axl Rose’s name was mentioned during Armstrong’s Guns N’ Roses induction speech. Despite Axl’s absence, three of the original members were present, including: Slash, Duff McKagan, and Stephen Adler.