Scuttlerock

The Scuttlerock is a species of skitterling that disguises as a rock.

=In fanon games=

In Pikmin 3: Return to the Pikmin Planet
The Skitter Stone is a skitterling appearing in Pikmin 3: Return to the Pikmin Planet. It resembles a rock with legs and a pair of red eyes underneath. Skitter Stones remain completely motionless until Pikmin or leaders approach, causing them to stand up and begin walking aimlessly. Skitter Stones are completely harmless, and the fastest way to kill one is by swarming it.

In Pikmin: The After Years
The Scuttlerock appears in Pikmin: The After Years. They are found in Dreary Dunes and behave as any other skitterling would, although they are much harder to kill.

In Pikmin: Sinister Incinerator
The Scuttlerock is a member of the skitterling family appearing in Pikmin: Sinister Incinerator. It lives in sandy, barren, or dry areas. It flees when Pikmin or leaders draw near, and is not dangerous. Scuttlerocks move slowly because of their hard, protective shell and may only be harmed with Purple Pikmin pounds.