Oily Dweevil

The Oily Dweevil is a Dweevil species that whenever they're attacked, they'll spray oil on their predators to restrain them from attacking any further.

=In fanon games=

In Pikmin: Revenge of the Darkfreeze
In Pikmin: Revenge of the Darkfreeze, the Oily Dweevil is basically a Black Dweevil with red eyes and mandibles. Like other Dweevils, they run from Pikmin. They spray oil, which will make any Pikmin but Blacks (even captains), which as a result, are unable to attack temporarily.

To defeat an Oily Dweevil, use a Purple Pikmin, unless unavailable. Otherwise, use Black Pikmin. If all else fails, the Captain is your last hope.