Fire Storm

From MMKB

Fire Storm (ファイヤーストーム) is Fire Man's power. Fire Storm does double duty--it shoots a fireball, and has a shield effect (albeit for a brief moment). So for the first part of the Wily Battle, you can use Fire Storm to both use the initial fire ball and the shield to do some damage.

[edit] Robot Masters And Bosses Weak Against Fire Storm

• Bomb Man: Mega Man

• Cut Man: Mega Man and Mega Man: Dr. Wily's Revenge

• Copy Robot: Mega Man

• Wily Machine 1: Mega Man

• Hyper Storm. H: Mega Man: The Wily Wars

• Wily Machine 2: Mega Man: The Wily Wars

• Oil Man: Mega Man: Powered Up

• Yellow Devil: Mega Man: Powered Up

[edit] Robot Masters And Bosses Immune To Fire Storm

• Magmard Serpent: Mega Man: The Wily Wars