M Bomb

About
The M Bomb and m Bomb were two extremely powerful weapons created by Papaya Server, one of the Four Lords of Zeth and infamous for doing strange and dangerous experiments with the help of the Nomicon. They are both large black spherical objects, with the only difference between the two being the M and m letters marked on them. As the name implies, they are both extremely powerful explosive devices that when detonated will affect the surrounding area for miles around, much like a nuclear bomb. However both of them have an even more amazing property: the M Bomb explosion only destroys Monsters, and the m Bomb explosion only kills humans.

The M Bomb was employed to deadly effect during the Monster Invasion by Rance and his group during the events of Rance VI, destroying the majority of the monsters attacking the Zeth refugees though it had little effect on their more powerful leaders such as the Dark Lord La Saizel and her Apostle Yuki.