The Arukoitan can be found in various places throughout the main network of ruins on Kattelox as well as the Sub-Cities, however they do not appear in the Main Gate or the three Sub-Gates.

They walk on two legs and are rather clumsy. Often times they walk straight until they end up bumping into a wall. Once their sites are set upon their target, they shoot fireballs from the snout-like pieces on their heads. They keep their attention on their enemies and will often hop to the side to avoid return shots.

Arukoitan work in pairs with Orudakoitans. Orudakoitans are somewhat like radar, as they spot the enemy and then alert the Arukoitan as to where it is. The downside to this arrangement is that the Orudakoitan is an easy target, and once blown up, the Arukoitan is useless. Without its accompanying Orudakoitan it will simply stop and stand still with its head spinning around and around.