* BlackSheepHit: "The Pot." Maynard's vocals, especially in the beginning, are much higher than normal and barely sound like him, and it's one of Tool's "poppier", more radio-friendly songs.
* CreatorBacklash: After Maynard blew out his voice recording "Ticks and Leeches", he said that he would never perform it live. Since then, it ''has'' been played a few times, using heavy vocal effects that keep Maynard from having to strain his voice with the actual screams.
* FollowTheLeader: Inspired a wave of similar-sounding acts in, oddly enough, the PostGrunge genre. Most of them didn't achieve much success.
* LyingCreator: Tool is known to spread misinformation about themselves as a way of preserving their mystique.
** One of their most famous fibs was claiming to subscribe to a philosophy called "Lacrymology," the study of crying, from a book called ''The Joyful Guide to Lacrymology'' published in the 1940s. Lacrymology doesn't actually exist.
** Another example applies to ''Lateralus'', albeit for different reasons. The name of the album was "[[TheUnreveal revealed]]" in January 2001 as ''Systema Encéphale'', complete with a full setlist[[note]][[CaptainObvious By the way, this is the lie]][[/note]]. [[DigitalPiracyIsEvil Cue dozens of bogus song files being uploaded on file-sharing networks]]. A month later, in what was more or less a TakeThat aimed at the pranksters, the album was revealed to be titled "''Lateralus''" instead, and that the name ''Systema Encéphale'', along with ''the entire "revealed" setlist'', was all a ruse.
** Adam issued a false statement that the band's new 2014 album was complete. Fans were ''outraged'' when he said he was joking, although work on the album actually ''is'' finally going on.
* ReclusiveArtist: The band rarely make public appearances outside of live performances.
* WriteWhatYouKnow: A lot of Tool's lyrics can be summed up as "Maynard exploring his childhood traumas", ''especially'' his relationship with his invalid mother. Some of his earlier songs included military slang, due to his brief involvement in ROTC.