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The Pokémon merge glitch, commonly known as the Q◣ glitch, is a glitch enabled by the glitch Pokémon Q◣ and 'M (FF). It involves depositing Q◣ and other Pokémon into the Pokémon Storage System in a certain order, which then causes the Pokémon's moves and stats to be transferred between each other, creating an unstable hybrid Pokémon.
Performing the glitch
First, the player must have a Q◣ or 'M (FF), at least one Pokémon above it and two Pokémon below it, all in the party. The Pokémon below the Q◣ or 'M (FF) will be the 'recipient' to the Pokémon below it; that Pokémon will then be the recipient to the Pokémon below it, etc. The Q◣ or 'M (FF) will appear in the top slot where the deposited Pokémon was, but also stay in its original spot and be the recipient to the Pokémon directly below it. Each Pokémon is now an 'unstable hybrid' of it and the Pokémon that was below it. An unstable hybrid cannot be traded to Pokémon Gold, Silver, or Crystal. An unstable hybrid displays the sprite and type of the 'recipient' Pokémon, and evolves in the same way as it; it has the level, stats (IVs, stat experience, base stats, and overall stats), color palette, effective typing, nickname, and moves of the 'donor' Pokémon.
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- Main article: Unstable hybrid Pokémon
To stabilize an unstable hybrid Pokémon, a Pokémon can be evolved (in the way the recipient would), traded to Pokémon Stadium 2, or deposited and withdrawn from Pokémon Day Care. A stabilized hybrid will be the species and level of the recipient Pokémon (or its evolved form if it was evolved), but have the stats, nickname, and moves of the donor. Once stabilized, the Pokémon can be traded to the Generation II games.