Also known as Masō Kishin Cybuster, Masou Kishin Cybuster
is a 26-episode anime produced by Bandai Visual, NAS, and TV Tokyo. It was animated by Ashi Productions and it aired in Japan between May 3, 1999, and October 25, 1999.

Cybuster
In an enviromentally wrecked future Tokyo, a young man named Ken Ando joins an organization called DC. Little does he realize that his fate and that of Earth will be linked to a mysterious mecha from another world. (Source: ANN)
~5 min read
is a 26-episode anime produced by Bandai Visual, NAS, and TV Tokyo. It was animated by Ashi Productions and it aired in Japan between May 3, 1999, and October 25, 1999.
It is loosely based on original characters and the Cybuster mech from the video game series Super Robot Wars.
via Jikan · MyAnimeList
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