King Crimson's influence extends to many bands from diverse genres, especially of the 1990s and 2000s. Tool are known to be heavily influenced by King Crimson, with vocalist Maynard James Keenan joking on a tour with them: "Now you know who we ripped off. Just don't tell anyone, especially the members of King Crimson." Modern progressive, experimental, psychedelic and indie rock bands have cited them as an influence as well, including the Mars Volta, Porcupine Tree, Primus, Mystery Jets, Fanfarlo, and Anekdoten, who first practised together playing King Crimson songs. Steven Wilson, the leader of Porcupine Tree, was responsible for remixing King Crimson's back catalogue in surround sound and said that the process had an enormous influence on his solo albums. In November 2012 the Flaming Lips in collaboration with Stardeath and White Dwarfs released a track-by-track reinterpretation of In the Court of the Crimson King entitled Playing Hide and Seek with the Ghosts of Dawn.Colin Newman, of Wire, said he saw King Crimson perform many times, and that they influenced him deeply. The seminal hardcore punk group Black Flag acknowledge Wetton-era King Crimson as an influence on their experimental period in the mid-1980s. Melvin Gibbs said that the Rollins Band was influenced most by King Crimson, using similar chords. Bad Religion cites the lyrics of "21st Century Schizoid Man" on their single "21st Century (Digital Boy)" and the name of their record label, Epitaph (founded by their guitarist Brett Gurewitz), comes from the song of the same name of Crimson's debut album.
King Crimson have frequently been cited as pioneers of progressive metal and as an influence on bands of this genre, including Mastodon, Between the Buried and Me, Leprous, Haken, the Ocean, Caligula's Horse, Last Chance to Reason, and Indukti. Members of metal bands Mudvayne, Voivod, Enslaved, Yob, Pyrrhon and Pallbearer have cited King Crimson as an influence. Heavy experimental and avant-garde acts like the Dillinger Escape Plan, Neurosis, Zeni Geva, Ancestors, and Oranssi Pazuzu all cite King Crimson's influence.