Thunder Beam

Thunder Beam (サンダービーム) is Elec Man's Special Weapon. When used by Mega Man, it shoots one electrical bolt forward, one up, and one down. It should be noted that it is the most powerful weapon in the first Mega Man game (both the NES version and the Game Boy version). It can also break certain barriers that can otherwise only be removed by the Super Arm.

Robot Masters And Bosses Weak Against Thunder Beam

 * Ice Man: Mega Man and Mega Man: Dr. Wily's Revenge
 * Yellow Devil: Mega Man and Mega Man 2: The Power Fighters
 * Dive Man: Mega Man 2: The Power Fighters
 * Dr. Wily's 2nd Form: Mega Man 2: The Power Fighters
 * Time Man Mega Man: Powered Up