Power Stone

Power Stone is Stone Man's power. When Mega Man uses it, three stones shoot out and spiral about. In Mega Man 2: The Power Fighters, it launches a giant stone hand that rises from the ground and goes forward.

Robot Masters And Bosses Weak Against Power Stone

 * Charge Man: Mega Man 5 and Mega Man IV
 * Dark Man IV: Mega Man 5
 * Circling Q9: Mega Man 5
 * Bright Man: Mega Man IV
 * Ballade 2: Mega Man IV
 * Wily Machine 1: Mega Man IV
 * Star Man: Mega Man for the Sega Game Gear
 * Elec Man: Mega Man 2: The Power Fighters

Capacity

 * Each use of Power Stone only drains one weapon energy unit. It's possible to use Power Stone twenty-eight times with a full weapon energy gauge.

Usefulness

 * Can be helpful to take out enemies in hard to reach (or dangerous) spots, such as the Power Massler in the second area of Wily's Castle (near the boss, Circling Q9).

Trivia

 * Coincidentally, Capcom has a fighting game series called "Power Stone".