The manga was originally serialized in Tokuma Shoten's Monthly Shōnen Captain, the first appearance being in the February 18 magazine beginning in 1985.
When Shōnen Captain was discontinued in 1997, the manga was picked up by Kadokawa Shoten who subsequently re-released all of the previous tankōbon originally published by Tokuma.
The situation gets worse with the fact that Cronos is continuously sending more and more powerful Zoanoids to retrieve the Guyver.
Guyver: Out of Control is a 1986 short horror original video animation based on the manga.
The story follows high school students Shō Fukamachi and Mizuki Segawa who accidentally discover one of three Bio Booster Armor units stolen from the Chronos Corporation.
On Anime News Network, Justin Sevakis called it an "extremely dated piece of pulp that still somehow manages to be fun".
Guyver: The Bioboosted Armor is a 26-episode anime series based on the first ten volumes of the manga.