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Move AI Glitch
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From Glitch City Laboratories

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Miscellaneous glitches of Pokémon Red and Blue and Pokémon Yellow

Cooltrainer move | Super Glitch | Surfing glitch | Statue behaviour glitch | ZZAZZ Glitch | Amazing Man | Stand on a Tree | Invisible PC | Evolving Raichu | Following Pikachu happiness oversight (Yellow only) | Zero Error | Transform into a Ditto | See a Ghost without a Silph Scope | Get stuck in a wall | Invisible Tree | Glitched Pokédex (Gameshark) | Billʼs Secret Garden | Coastal Flooding | Evolve without an Evolution Stone | Walk on Water | Move AI Glitch | Glitch battle systems | Item Slot Duplication | Silph Co. PC Glitch | Trick Zone | Introduction Nidorino glitch | Mute the music in the Pokémon League | Walk around with only fainted Pokémon | Wild appeared! | Lavender Town ghost Pokémon Pokédex glitch | Fire Spin glitch | PP Reset Glitch

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A normal dragonair under the effect of the move AI glitch

In the Generation I Pokémon games, there is a slight bug in the formulae which decide which move the enemy Pokémon will use.

The game would ensure that if the enemy Pokémon has a move which is super effective or neutral to its opponent's type, it would use that move over a move that its opponent resists. This effect would always be applied, so the super effective moves would always be used until they ran out of PP. This also meant that if the opponent's only neutral or super effective move was a status move, the opponent would be forced into using it.

This is a problem notably with Psychic-type moves such as Barrier, Light Screen and Agility (which was a Psychic-type move until Generation III.) For example, a Rapidash's high Special Attack stat would make it relatively easy to defeat a Golbat of the same level with Fire Blast. However, if that same Rapidash also knew Agility, it would never use Fire Blast until Agility's PP was 0. However, in Generation I technically an opponent's PP will never deplete to zero. As a result, the Golbat would have an unlimited amount of time to defeat the Rapidash, unless that Rapidash was battled in a link battle.

This glitch was fixed in later generations of the Pokémon games, due to improvements of the opponent's AI.

External links

  1. A thread on Glitch City Laboratories Forums concerning the Move AI glitch