Kiryu is also the nickname of Mechagodzilla in the Millennium series of the Godzilla franchise.
The Shōwa Mechagodzilla appears in the video games Godzilla: Monster of Monsters for the Nintendo Entertainment System, Godzilla for the Game Boy, The American version of Super Godzilla for the Super Nintendo, Godzilla: Battle Legends for TurboDuo, Godzilla Generations for the Dreamcast and Godzilla Generations: Maximum Impact for the Dreamcast.
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In Ernest Cline's novel Ready Player One, the main antagonist transforms into Mechagodzilla during the climatic battle in a virtual reality environment.
He made his boss appearance inSuper Godzilla after the defeat of King Ghidorah, Mechagodzilla and Biollante and before Godzilla confronts Mecha King Ghidorah and his new enemy Bagan.
The film featured the return of classic characters from the original series such as Rodan and Mechagodzilla, as well as introducing an infant Godzilla named BabyGodzilla.