Armor Construct is an enemy from Final Fantasy IV: The After Years. They will counter any magic attack by using Self-Destruct, so it is advised to only use physical attacks on them. They are not powerful, but the player should not cast Berserk on them, as it will only make them much more difficult to defeat. The Armor Construct the player faces as a "monster-in-a-box" drops a Ribbon, and this is only accessible in "The Planet Eater" episode.
In this same episode it can also be fought in the X-shaped peninsula on the southeast of Kaipo for the high-tier axes such as Ogrekiller, Poison Axe, and the game's second strongest axe Rune Axe.