Crumbug

The Crumbug is a small, more cuboid breadbug that quickly eats Pikmin. It wanders about its territory and turns around upon reaching a wall. If it falls to a lower elevation, it won't be able to climb back up and will continue to pace there.

=In fanon games=

In Pikmin: Decayed Leaf
The Crumbug is a small breadbug in Pikmin: Decayed Leaf. The creature resembles its original counterpart in Hey! Pikmin. The small creature will usually only be found coming out of a breadbug den. After appearing, they will begin to wander around or follow any Breadbugs. Although Crumbugs cannot carry anything, they can still go up to Pikmin and eat them quickly. Fortunately, a Crumbug can be killed in one hit; allowing for any Pikmin to be saved before being eating. Sometimes, Crumbugs can be found outside of breadbug dens; where they will patrol a set path.