Rock Pikmin are one of types of Pikmin introduced in the game Pikmin 3 for the Wii U, alongside the Winged Pikmin. They have an unusually tough body resembling a rock. Their hard bodies can break crystal and ice surfaces and structures. When thrown, they deal more damage than the average Pikmin. Their weaknesses are they walk a bit slower and they can't latch on to enemies. When they attack, they will instead throw themselves at the enemy which is slower and weaker.
Unfortunately even with their size, they only have the strength of one Pikmin like all other types except Purple. Along with the Winged Pikmin, they are only Pikmin to get purple buds and flowers.