Dubious Disc

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Dubious Disc
Dubious Patch
Dubious Disc
Dubious Disc
Pokémon Global Link artwork
Introduced in Generation IV
Generation IV Bag Items pocket icon.png Items
Generation V Bag Items pocket icon.png Items (Held items)
Generation VI Bag Items pocket icon.png Items
Generation VII Bag Items pocket icon.png Items
Power 50

The Dubious Disc (Japanese: あやしいパッチ Dubious Patch) is a type of held item introduced in Generation IV. It allows Porygon2 to evolve into Porygon-Z.

In the core series games


Games Cost Sell price
N/A PokémonDollar.png1050
B2W2 PokémonDollar.png60000 PokémonDollar.png1050
XYORAS N/A PokémonDollar.png1,050
SMUSUM N/A PokémonDollar.png1,000


Held item

Causes Porygon2 to evolve into Porygon-Z when traded while holding it. This consumes the Dubious Disc.


Games Description
A transparent device overflowing with dubious data. Its producer is unknown.


Games Finite methods Repeatable methods
DPPt Route 225, Team Galactic HQPt
HGSS Route 42
PBR 12000 Poké Coupons
BW P2 Laboratory Route 13 (treasure hunter)
B2W2 P2 Laboratory Join Avenue (Antique Shop), Black City (Store 4)
XY Battle Maison (32 BP)
ORAS Battle Maison (32 BP)
PMC Balloon Popping (Lv. 1)
SMUSUM Aether Paradise Battle Tree (32 BP)
SwSh Trade
SwShIoA Workout Sea Cram-o-matic (Electric: 102-110 points)

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.


Games Cost Sell price
MDTDS 1000MDBag Poké RTRB Sprite.png 1MDBag Poké RTRB Sprite.png


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.


Games Description
MDTDS An enigmatic disc that overflows with dubious data. It allows a certain kind of Pokémon to evolve.


Games Finite methods Repeatable methods
MDTDS 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)


MDBag Dubious Disc TDS Sprite.png
Sprite from
Explorers of Time,
, and Sky

In the TCG

Triumphant Porygon-Z

A Dubious Disc is featured in the artwork of the Triumphant Porygon-Z card.


  • 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

Language Title
Chinese Cantonese 可疑修正檔 Hóyìh Sāujingdóng
Mandarin 可疑修正檔 Kěyí Xiūzhèngdàng *
可疑补丁 Kěyí Bǔdīng *
France Flag.png French CD Douteux
Germany Flag.png German Dubiosdisc
Italy Flag.png Italian Dubbiodisco
South Korea Flag.png Korean 괴상한패치 Goesang-han Patch
Spain Flag.png Spanish Disco ExtrañoGen VI+
DiscoxtrañoGen IV-V

Project ItemDex logo.png This item article is part of Project ItemDex, a Bulbapedia project that aims to write comprehensive articles on all items.