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The Berserk Gene was a consumable held item exclusive to the Gen 2 games. It was the signature held item for Mewtwo, and wild Mewtwo are encoded to always have it in the second generation games like Ho-oh's sacred ash. While Mewtwo cannot be encountered (through normal methods) in the wilds of GSC, the berserk gene can still be obtained as a hidden item in the water outside of the now sealed Cerulean Cave. An item finder can help you locate the invisible item. It's adjacent to a Cerulean city npc who stands behind the house nearest to the sea. If you talk to him his text foreshadows by telling you that there used to be a cave here with horribly powerful pokemon in it. His item finder will start going off, distracting him.
The beserk gene is a one-time use held item. It is consumed as soon as the pokemon holding it is sent into battle, unlike other items that may have additional requirements like berries that activate in a certain health range. What the beserk gene does is raise the holder's attack by two stages, so it's an automatic swords dance boost. The significant stat boost comes at a price however, after consumption the pokemon also gets confused. This confusion doesn't wear off, but is a permanent status for the duration of most battles unless healed. So very high risk, high reward item.
While this special item is associated with Mewtwo, a leftover from the experiments it underwent before it notoriously went beserk and destroyed Cinnabar Island lab, any pokemon can actually be equipped with the beserk gene. It will always activate as soon as they enter battle.
Did you discover the beserk gene in your GSC playthroughs?
I honestly didn't even know it existed until recently. I think it is an interesting part of the game's lore though. I would have liked to have seen it return in HGSS, since you can finally explore Cerulean cave again in Kanto in the remakes. It could be something dropped after catching or defeating Mewtwo.
The beserk gene is a one-time use held item. It is consumed as soon as the pokemon holding it is sent into battle, unlike other items that may have additional requirements like berries that activate in a certain health range. What the beserk gene does is raise the holder's attack by two stages, so it's an automatic swords dance boost. The significant stat boost comes at a price however, after consumption the pokemon also gets confused. This confusion doesn't wear off, but is a permanent status for the duration of most battles unless healed. So very high risk, high reward item.
While this special item is associated with Mewtwo, a leftover from the experiments it underwent before it notoriously went beserk and destroyed Cinnabar Island lab, any pokemon can actually be equipped with the beserk gene. It will always activate as soon as they enter battle.
Did you discover the beserk gene in your GSC playthroughs?
I honestly didn't even know it existed until recently. I think it is an interesting part of the game's lore though. I would have liked to have seen it return in HGSS, since you can finally explore Cerulean cave again in Kanto in the remakes. It could be something dropped after catching or defeating Mewtwo.
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