Walleech

The Walleech is a species of granka that hides in holes in walls.

=In fanon games=

In Pikmin X: Deep Freeze
The Walleech is a granka in Pikmin X: Deep Freeze that hides inside conspicuous holes in walls. Should a Pikmin or leader draw too close, the creature will spring out and devour up to five Pikmin in front of the hole, then quickly retreat back inside. The Walleech's line of sight is rather generous, however, but its ambush can easily be thwarted by stopping short of walking past the hole itself, causing the beast to lunge at nothing and leave itself open to attack. When defeated, it slinks back into its hole and the opening covers up with sediment.