In a post-apocalyptic world ravaged by earthquakes, grotesque monsters and powerful demons run rampant through the streets of New Tokyo. Only a select few people have been trained in the techniques necessary to defeat these creatures. Brothers Kakugo and Harara Hagakure not only possess the skills, they also harbor the power of the Zero Armor containing the souls of thousands of warriors. Separated from his brother, Kakugo roams the land fighting in order to restore some sort of peace and safety to mankind. However, he finds these monstrosities to be merely pawns to a much larger adversary from his past, who may prove to be his most dangerous opponent of all.
Shou Fukamachi is just an average high school student,until one afternoon, Sho and his friend Tetsuro stumble upon what looks to be a landmine, which Sho accidentally activates. Instead of attacking and killing him, it grants him control of the Guyver, a powerful biological armor, which the evil corporation Chronos wants to take at any cost, even if it means killing Shou and his friends.
At their simplest, Guyver and Apocalypse Zero are anime about a guy in a living power suit that fights monsters and opposes an evil organization.
Guyver does away with the over the top gore of apocalypse zero and instead comes up with more story and character development. Regardless, if you enjoyed the battles in Apocalypse Zero, you are sure to enjoy Guyver.