Mm4 mothraya

Mothraya is a giant robotic moth, and is the boss of Cossack Stage 1 in Mega Man 4. The red flashing light is its weak point, and Ring Boomerang is the best weapon to use (though Drill Bomb and Dust Crusher are also good options). It can thrust its spike-tipped "proboscis" into the floor, causing a part of the floor to be destroyed.