When he's not in the J-music scene
What does Gackt do when he's not busy with making music? Read on and find out (as if you didn't k now). 
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Source: Wikipedia
In addition to music, Gackt has been involved as an actor in various TV commercials (usually playing himself), and in the Japanese drama Hero's Hero. He also co-wrote and co-starred in the hit vampire themed movie Moon Child with HYDE, vocalist of L'Arc~en~Ciel.
Gackt is also officially an author, having written Moonchild: Requiem, and several as-yet unpublished short stories. In 2003 he published his autobiography titled Jihaku, in which he displayed deep thoughts and described events that had a profound impact on his life. Gackt has worked as a runway model for his favorite designer, Yoshiyuki Konishi; designed his own stage-wear and clothing line; and opened his own private, members-only restaurant and bar, Tamaly Bar, complete with his own personal and family recipies.
Gackt was also involved in the PlayStation 2 game Bujingai, for which he performed some of the voices as well as doing motion capture for the game's protagonist, Lau Wong, who is a redheaded vision of Gackt himself. His voice acting, however, was not included in the English version of Bujingai. He has also appeared in Japanese commercials for the hit game Metal Gear Solid 2: Sons of Liberty, and his name appeared on a dog tag in the game. Other voice-over work of Gackt's included the character 'Seiji' from the anime New Fist of the North Star (Shin Hokuto no Ken), as well as singing the opening and ending theme songs. He also performed the ending theme 「月の詩」, ("Tsuki no Uta") for the anime Texhnolyze.
Rumors on the internet cite Gackt as the model for the Final Fantasy VIII lead character Squall Leonhart. In the game, Squall is wearing a jacket identical to one Gackt wore in his Malice Mizer days. Said rumors state that the designer of Squall Leonhart was a big fan, but Gackt has never been officially credited. Tetsuya Nomura, the character designer for Squall Leonhart, has stated that American actor River Phoenix was the basis for Squall, and that the jacket was intended to test the Playstations capabilities.
However, a character with his likeness will appear in Dirge of Cerberus: Final Fantasy VII. The character will be created using video-capture and digitally inserted into the game instead of the more traditional animation. Although having little direct involvement in the game, his character is revealed through various G Reports hidden throughout the game. Gackt's identity in Dirge of Cerberus is thus known as G, the prototype to Shin-Ra's super-soldier, Sephiroth (or codename S).
In early 2005 he was asked to write and perform the theme songs for the Gundam movie Zeta Gundam: A New Translation, a movie eagerly anticipated by the anime community. The songs were 'Metamorphoze' and a rearrangement of a previously released song, 「君が待っているから」 ("Kimi ga Matteiru kara").
Gackt's next single, Redemption, is also the theme for Dirge of Cerberus, and was released alongside the game (and its soundtrack) in January for Japan.
At Otakon on August 5th 2006 Yoshiki announced he will be forming a band with Gackt. "Im also starting a band with...well alot of you probably know him ...Gackt! Yeah..it was kind of a secret. I talked to him on the phone last night.. I guess its alright" note: it has been confirmed that Gackt and Yoshiki will be creating a "super-band" together and touring the USA in 2007 (concert dates and other band members have not been announced)
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