The God Eraser is a weapon created by Noriko Null capable of transmitting lethal amounts of energy into its target.
While potentially harmful both to mortals and immortals, it's notable for being capable of killing gods once paired with the Nexus.
Its exact design is a closely guarded secret; it has been described by Noriko Null as "basically a specialized linear-beam vacuum tube that generates electromagnetic waves by the cyclotron resonance of electrons through superconducting magnets" [1]
First appereance: Beyond The Impossible #32