A dubious disc is a hold item for Porygon2. If you trade a Porygon2 that's holding a dubious disc, it will evolve into Porygon-Z.
The Pokemon that uses the Dubious disk is Porygon2 to evolve him into a porygon-Z
You find the Dubius Disc in the P2-Labratory in pokemon white. Hope that helped :)
you can't. dubious disc is to evolve porygon 2 into porygon z, porygon z is a sinnoh Pokemon and leaf green only goes up to hoeen
The Dubious Disc, when attached to either a Porygon2 or a Porygon-Z and traded, evolves the Pokemon. In HeartGold, it's found in Johto on Route 42 (requires Rock Climb).
If you give the item to a Pokemon to hold, and then trade it, then your Pokemon will evolve. I am not sure if this only applies to Porygon or if it will work for any Pokemon but I hoped this helped
It evolves porygon2 (trade)
The Pokemon that uses the Dubious disk is Porygon2 to evolve him into a porygon-Z
trade it will holding up-grade or dubious disc i fogot i just remembered, up grade
route 225
you Trade a porygon2 while holding Dubious Disc. you Trade a porygon2 while holding Dubious Disc.
Give Porygon an upgrade to hold and then trade it. Also, if you want a Porygon-Z give Porygon2 a Dubious disc to hold and then trade it.
To evolve Porygon in Pokemon Platinum you need to trade it while it is holding the Up-Grade item. This will evolve Porygon into Porygon2. If Porygon2 is traded while holding a Dubious Disc it will evolve into Porygon-Z.
You find the Dubius Disc in the P2-Labratory in pokemon white. Hope that helped :)
you can't. dubious disc is to evolve porygon 2 into porygon z, porygon z is a sinnoh Pokemon and leaf green only goes up to hoeen
route 225
you have to get a porygon, then trade it with an upgrade, then you have to trade porygon2 with a dubious disc, which is found in the team galactic headquarters in veilstone city.
you find the dubious disc somewhere on route 225. good luck! you find the dubious disc somewhere on route 225. good luck!