If you liked the Apocalypse Zero anime, the Anime-Planet community thinks you'd like:
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.