Armored Cannon Beetle
Granitus chukkulinae
The Armored Cannon Beetle is the mature stage of an Armored Cannon Beetle Larva. The beetle is first discovered during Olimar's first visit to the Pikmin planet. During his second voyage, only the larval stage is present. It is a large, metallic black beetle with a rounded thick shell of armor and a blowhole resting above its head. It attacks by inhaling through the blowhole and subsequently firing a rolling rock from its mouth, which will crush any of its smaller prey, such as Pikmin.
This creature is only found during Olimar's first visit in The Forest of Hope, where one is guarding the Radiation Canopy, and The Distant Spring, where one has ingested the Bowsprit.
How to kill
The only way it can be defeated is by clogging the blowhole during air intake (Pikmin, and presumably other small creatures, are impervious to harm when inhaled). This causes the beetles internal temperature to rise dramatically, and in response the beetle will expose its burning abdomen underneath the armor to vent. The exposed abdomen leaves the beetle extremely vunerable to attack. However, the Beetle will quickly unclog its blowhole, shield its backside, and continue its attack after excess heat has been drained.