Rock Pikmin

Rock Pikmin are the fourth kind of pikmin discovered in Pikmin: Before the Impact and are the only pikmin that hasn't evolved through the games. They can break Glass and Crystal with their hard, shiny bodies but their limbs and stems seem to be a dull black colour and on its head rests a dark green leaf or a purple bud or flower. Rock Pikmin are found in Snakey Mists trapped inside a Medusal Slurker and can only be created when any other pikmin are sucked up by a Medusal Slurker. Under the command of Brandon, Rock Pikmin have increased speed and can be thrown higher. He is the kind of guy that sleeps till mid-afternoon but can work hard when he wants to; he may look as cold as stone (Harhar) but he is surprisingly cuddly!

In Pikmin: Adventure of 4
In this game, Rock Pikmin are the fourth kind of pikmin you find. They are immune to being crushed, and can shatter Glass and Crystal. Where they are found is still undecided.