Godzilla (ゴジラ Gojira) is a kaiju that first appeared in the 2002 Godzilla film, Godzilla Against Mechagodzilla. It is the fourth incarnation of Godzilla to appear in the Millennium series of films, the only Millennium series incarnation to appear in more than one film, and the eighth onscreen incarnation of the character overall. This Godzilla first appeared in 1999, 45 years after the first Godzilla was killed by Daisuke Serizawa's Oxygen Destroyer. His attack led the JSDF to begin arming itself against another attack. The JSDF salvaged the original Godzilla's skeleton from the sea floor and converted it into a bio-robot named Kiryu, which was sent into battle against Godzilla in 2003. Godzilla's roar reawakened the spirit of the first Godzilla within Kiryu, causing it to go berserk and turn against the JSDF. When Kiryu was repaired and battled Godzilla again, the two monsters fought to a draw and Godzilla was expelled from Japan. However, this Godzilla was attracted to Japan again by the presence of the first Godzilla's remains, and engaged in another battle with Kiryu the following year, this time with Mothra and her twin larvae aiding Kiryu. Godzilla was severely wounded by Kiryu, but rather than finish off his organic counterpart, Kiryu became possessed by the original Godzilla's spirit once again and sank itself with Godzilla in the Japan Trench, saving Godzilla's life and taking him far away from humanity.