The Doodlebug (オナラシ?, lit.: "Fart Death or Fart Emitter") is an enemy in Pikmin 2. It has the same morphology of the Iridescent Flint Beetle, except it is coated with dirt and has small flies hovering around it, giving it a more repugnant appearance. However, it is actually in the Flint Bug family, not the Flint Beetle family. They, like Iridescent Glint Beetles, drop spray – ultra-bitter spray; in Challenge Mode, they sometimes drop treasure. They are only found inside caves. When Doodlebugs move, they release flatulence and leave noxious clouds of poisonous gas wherever they were, thus subjecting nearby Pikmin to choking. Therefore, White Pikmin are ideal for killing these creatures. If they are killed while petrified, they do not release any nectar or sprays, but do drop any treasures they were holding.
“While life-forms that excrete foul musks to warn of danger are not rare, the doodlebug is the only species known to release flatulence when active above ground. Interestingly enough, since it is merely releasing the gas created by decay of the contents of the creature's intestines, it does not have a special musk-producing organ. This means the creature is in fact merely flatulating. Spectral analysis of the rank gas indicates it contains not only methane, but hydrogen sulfide as well, making the flatulence a Grade XIII biohazard.”
“Looking for a flavor that will surprise and delight your guests? This beast's aroma may surprise your guests, but it won't be delightful!”
Behaviorally, Doodlebugs are very similar to Iridescent Flint Beetles. Like the Flint Beetles, the Doodlebug cannot normally be harmed by leaders. However, it is different from the others in that it remains above ground for a much longer period of time. Once activated, the Doodlebug springs out from the ground, immediately releasing poisonous gas as it does so. Like all other poison in the game, this gas will kill all non-White Pikmin if they are exposed to it and are not whistled back to a leader. Once active, Doodlebugs move quickly and release more gas at regular intervals. If a Pikmin is landed directly onto one's back, it will flip over briefly and drop nectar or a drop of spray. Once a Doodlebug has been flipped over a few times, it will quickly retreat underground. The same thing will happen if the bug is simply left undisturbed above ground for too long.
After being prompted into surfacing, a Doodlebug is capable of killing your Pikmin if you are careless. It is advisable to bring either a large group of White Pikmin or a small group of Purple Pikmin, as the Doodlebug will disappear after getting flipped. Be cautious when fighting it within close proximity of other enemies, as its scuttling may awaken them. To defeat the creature normally, just throw Pikmin at its backside.
Alternatively, you could use an ultra-bitter spray on it and either swarm it with your Pikmin or punch it. Note that though this method is usually safer, it also gives you less reward, as the ultra-bitter drops that the Doodlebug drops when flipped are quite useful against future enemies.
Names in other languages