It was produced by hip hop producer Dan the Automator and originally featured UK rap group Phi Life Cypher, but the version that appears on the album features American rapper Del the Funky Homosapien, The Phi Life Cypher version of "Clint Eastwood" appears on the B-side album G Sides.
The band were nominated for four Brit Awards, including Best British Group, Best British Album and British Breakthrough Act, In November 2002, a DVD titled Phase One: Celebrity Take Down was released, giving the phase its name.
The DVD contains the four Phase One promos, the abandoned video for "5/4", the Charts of Darkness documentary, the five Gorilla Bitez (comedic shorts starring the band characters), a tour of the website by the MEL 9000 server and more.
Three new sets of Gorillaz vinyl figures were released in 2006.
The basic set which was limited to 60,000 was released on 16 October 2006, and on 2 November 2006 the two-tone set limited to 1,000 and the white edition which was limited to 4,000 were released.
The DVD's menu was designed much like the band's website and depicts an abandoned Kong Studios.
Rumours were circulating at this time that the Gorillaz team were busy preparing a film, but Hewlett said that the film project had been abandoned: "We lost all interest in doing it as soon as we started meeting with studios and talking to these Hollywood executive types, we just weren't on the same page.
The band consists of four animated members: 2-D (lead vocals, keyboards), Murdoc Niccals (bass guitar), Noodle (guitar, keyboards), and Russel Hobbs (drums and percussion).
These members are fictional and are not personas of any "real life" musicians involved in the project.
A representative said the band was not involved in its creation.
Gorillaz are an English virtual band created in 1998 by musician Damon Albarn and artist Jamie Hewlett.
The virtual characters were first used at the 2005 MTV Europe Music Awards on 3 November 2005 In 2005, a set of Gorillaz figures were released by Kidrobot to coincide with the release of Demon Days.