Slabber

The Slabber is a species of Slabben that crushes Pikmin with its long, flat body.

=In fanon games=

In Pikmin: Decayed Leaf
The Slabber is a species of Slabben in Pikmin: Decayed Leaf. The creature has the appearance of a long, mossy, gray brick. However, the inside of the brick contains a small, purple bug which was controlling the brick the entire time.

Slabbers will remain idle until they sense Pikmin. They will then lift up their large bodies, attempting to fall over and crush their prey. Rock Pikmin and Purple Pikmin are the only way to actually do damage to its hard exterior. The more damage dealt to the creature, the more its true form; the purple bug, is revealed. If the brick is destroyed, then small chunks of rock will go flying everywhere, along with the insect. If the bug is not killed immediately, it will slowly begin to collect all of its rock chunks and reconstruct itself into a brick. These chunks can be destroyed by the two mentioned Pikmin types to prevent the Slabber from fully regenerating.