Grab Buster
"Grab Buster" is a weapon originating from the GameBoy game "Mega Man V" and was the signature weapon of Mercury. It was added to Mega Man Maker in version 1.8.0.
When firing the player will shoot a projectile that, when striking an enemy, will drain "life energy" from that enemy that then returns to the player adding to the player's life energy meter if not already full.