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
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.
you Trade a porygon2 while holding Dubious Disc. you Trade a porygon2 while holding Dubious Disc.
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 :)
route 225
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
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.
It can be used to evolve a porygon2 when equipped and traded