Atomic Fire

Atomic Fire (アトミックファイヤー) is the weapon obtained by Mega Man after Heat Man's defeat in Mega Man 2, Mega Man: Dr. Wily's Revenge, Mega Man: The Power Battle, Mega Man 2: The Power Fighters and Super Adventure Rockman. It shots fireballs at enemies, and it can be charged to increase its range and power. Proto Man, Bass and Duo can also use this weapon in the fighting games Mega Man: The Power Battle and Mega Man 2: The Power Fighters.

Bosses weak to Atomic Fire

 * Wood Man: Mega Man 2, Mega Man: The Power Battle and Super Adventure Rockman
 * Plant Man: Mega Man 2: The Power Fighters

Bosses immune to Atomic Fire

 * Alien: Mega Man 2
 * Fire Snakey: Mega Man: The Wily Wars

Trivia

 * Atomic Fire was the first chargeable weapon from the Mega Man franchise.