Hyper Bomb

Hyper Bomb (ハイパーボム) is Bomb Man's power. In the cartoons, its firing mechanism has two circles, probably to hold the bombs. When Mega Man uses this weapon, he throws bombs in a small arc (so it takes some practice to get used to throwing them). There's a small time delay between when a bomb is thrown and when it explodes, but it has a decent-sized explosion that damages or destroys anything within the blast.

Robot Masters And Bosses Weak Against Hyper Bomb

 * Guts Man: Mega Man
 * Copy Robot: Mega Man
 * Buster Rod. G 1: Mega Man: The Wily Wars
 * Mega Water. S: Mega Man: The Wily Wars
 * Hyper Storm. H: Mega Man: The Wily Wars
 * Wily Machine 3: Mega Man: The Wily Wars
 * Ice Man: Mega Man: Powered Up

Robot Masters And Bosses That Can't Be Attacked By Hyper Bomb

 * Yellow Devil: Mega Man
 * Wily Machine: Mega Man
 * Buster Rod. G 2: Mega Man: The Wily Wars
 * Fire Snakey: Mega Man: The Wily Wars
 * Wily Machine 1 and 2: Mega Man: The Wily Wars