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Ikepedia is the officially decreed successor to Gammapedia concerning Gammasphere canon.
Infinitypedia is another successor.
PorygonZ
From Gammapedia
PorygonZ looks like a dead Porygon2, but actually it's really a evolution of Porygon2. Only one exists, mostly because the Eerie Patch, the item used to turn Porygon2 into PorygonZ, has a virus that kills most virtual Pokemon. It likes to hug stuff, then attack them.
PorygonZ Encounters
PichuUmbreon was sleeping when he was hugged by PorygonZ, and he quickly pulled out a Pocket Bomb and drove it away.
