The Neutralizer is an item that appears in Earthbound. It is a multi-use gadget that only Jeff can use, and can be found in the Monkey Cave by giving one of the monkey a fresh egg for it.
Description[]
The Neutralizer affects all characters in battle, and undoes the effects of all PSI moves (including Mirror) used to that point in the battle, including any stats buffs and shields applied via PSI. Though it has no known appearance, it is described during the fight with the Mani Mani Statue, the Boogey Tent and the Kraken as a "pale green light", If used by Electro Specter, All shields including its own will be removed.