Iron Pillbug

Iron Pillbugs are a species of Parasick appearing in Pikmin: Spark. They are small isopods roughly the same size as their distant relative the Mitites, being small oval bugs covered in flat segmented plates that is similar to metal. This metal-like hide gives them full immunity to ground pounds made by Purple Pikmin and direct hits by Rock Pikmin. Docile and shy creatures spend their time minding their own business acting as harmless filter feeders. But when a large group of creatures such as Pikmin invades their personal space they roll up into impenetrable metal balls that are immune to direct physical attacks. However, when in this state and the Pikmin start to swarm it they retaliate by dashing forward into a straight line crushing anyone in their way before hitting a wall and having a small chance and flipping over becoming vulnerable briefly. Some predators like the bulborbs take advantage of these attributes and roar at any nearby pillbug scaring them into hiding before kicking them like small soccer balls. An iron pillbug will reveal itself once again when left alone and don't offer many spoils so its best to leave them alone unless you want to complete your creature log.