|The name or term "Acroyear" refers to more than one character or idea. For a list of other meanings, see Acroyear (disambiguation).|
The third-generation Acroyears are a strange, advanced series of Microspace warriors, prophesied by the Time Traveler's helmet to be part of Baron Karza's army in the Earthwar. Far more powerful than the second generation Acroyears, and capable of fighting their first generation counterparts on an equal footing, the Acroyear III warriors are armed with spherical silver fists that can Enerchange into a seemingly endless supply of weaponry, and pose a deadly threat to Micronauts and humans alike.
These Acroyears first arrived on Earth through a rift in space punctured by the Micronauts' future counterparts, moments before it closed. The Acroyears hunted down the Micronauts at Rhonda Conway's home, where they were also being searched for by Commander Klain's soldiers; the warriors first killed the humans by hitting them with bullet-like force, before turning on their targets from Microspace. Though Acroyear was nonchalant about his counterparts, he was shocked to discover that the futuristic Acroyears were capable of matching him in combat. As the Micronauts fled on the Heliopolis, the golden helmet expressed shock at the Acroyears' arrival, believing that they should not have arrived yet.