In the core series games
Porygon2 to evolve into Porygon-Z when traded while holding it. This consumes the Dubious Disc.
Acquisition In spin-off games
Pokémon Mystery Dungeon series
The Dubious Disc appears in
Pokémon Mystery Dungeon: Explorers of Time, Explorers of Darkness, and Explorers of Sky.
MD T D S 1000
If the player offers both a
Link Cable and Dubious Disc at Luminous Spring, Porygon2 can be evolved into Porygon-Z. This consumes the Link Cable and Dubious Disc.
If thrown, it will deal 1 damage (2 if
sticky). Using this item in a dungeon will consume it, with no effect.
MD T D S An enigmatic disc that overflows with dubious data. It allows a certain kind of Pokémon to evolve.
MD T D S
Treasure boxes, Job requests (★3-★9) Happy Outlook (Kecleon Shop: B3F, B5F, B7F, B9F, B11F, B13F, B15F, B17F, B19F), Mt. Mistral (Kecleon Shop: 3F, 5F, 7F, 9F, 11F, 13F, 15F, 17F, 19F), Shimmer Hill (Kecleon Shop: 2F, 4F, 6F, 8F, 10F, 12F, 14F, 16F), Lost Wilderness (Kecleon Shop: B3F, B5F, B7F, B9F, B11F, B13F, B15F, B17F)
Appearance In the TCG Trivia
Porygon-Z's Pokédex entries imply that the Dubious Disc was modified to enable it to work in alien dimensions, but that an unplanned error in the programming corrupted Porygon-Z and prevented it from fulfilling this purpose. In other languages