The Speargrub is an enemy encountered in Hey! Pikmin. It's found mainly in Sparkling Labyrinth, where it goes out of a small hole or den, and comes out. When hit with Rock Pikmin it will stand still, as they are unkillable. Due to this, they are more as a hazard than an enemy.
Notes
Hey Pikmin Creature Log
"Leaves its dwelling hole only to enter other holes. Maybe it wants a breath of fresh air or some sunlight. Or maybe it's looking for a friend..."
Battle Strategy
As stated before, these are unkillable, but you are able to make them stand still for a couple of seconds. Then they will begin to move again.
Gallery
Speargrub as it is seen in the Creature Log.