Butterfly Stompers are Blue Meanies that step on its enemies, butterflies or not.
Butterfly Stompers are round and blue with a number (at least 1-23) on their chest and a tail. Like other Blue Meanies they wear a black mask over their eyes. They all have green arms.
They never speak but are extremely aggressive, willing to step on anything that they can. In one instance, after the Chief Blue Meanie shot Max, showing that all that was left of him was his hat, Butterfly Stomper 3 stomped on him repeatedly for no other reason than he was there to stomp on. When he ran off, Max popped out of the ground, still alive.
Like other Meanies, they despise music.