Popperbug

The Popperbug is a specialized bug-like creature from Pikmin Eco. Its whole body is covered in a volcano-shaped shell, with an opening at the very top of it. They steadily walk along on four stubby legs, with small mandibles and four tiny eyes. It wanders around in a small territory, and doesn't attack unless the player is close by. Once this happens, its back will shutter and erupt, shooting out a number of rocks around itself in multiple directions. The main effect is to knock the Pikmin back, but Pikmin can be killed if caught directly underneath the rocks, which is fairly rare.