Bombmole appears exclusively in Stage 6 of Green Grounds and Stage 5 of Volcano Valley. This enemy is one of Moley's minions; a few Bombmoles hold signs with arrows, leading the Kirbys into an ambush. Once the heroes are trapped in Moley's domain, Bombmole and Pricklemole attack. This enemy emerges from a wall and holds up a bomb for a few moments before lobbing it at the Kirbys. It then disappears back into the wall. It can be taken down if the player flicks a Kirby into it.
Kirby Mass Attack's memory contains unused tiny sprites of Bombmole. These sprites seem to suggest that the enemy was originally going to appear in the distance and throw bombs from there at some point in the game, possibly during the battle against Moley.