Series: Godzilla Against Mechagodzilla
Godzilla Against Mechagodzilla (ゴジラXメカゴジラ, Gojira Ekkusu Mekagojira, Godzilla X Mechagodzilla), released in 2002, once again follows the original Godzilla timeline, in which Godzilla was killed by Dr. Serizawa’s secret weapon, the Oxygen Destroyer. (Wikipedia)