Slipknot is an American heavy metal band known as much for their distinctive masks and costumes as their dark, aggressive music. They released their self-titled debut album Slipknot in 1999, followed by Iowa in 2001 and Vol. 3: The Subliminal Verses in 2004, cementing their reputation as one of the most influential, dynamic, and theatrical acts in heavy music. Slipknot's We Are Not Your Kind was released in 2019 and debuted at number one in over 10 countries.