We've put together a brief guide for trainers looking to evolve their Porygon2 into a Porygon-Z in Pokemon Legends: Arceus.
Porygon has always been one of the stranger species in Pokemon. This Pokemon is made entirely of computer code that has come to life—though the language is unknown. As such, all manner of items can cause this species to change its shape and form. For example, it evolves into Porygon2 using the Upgrade disc. That doesn't mean trainers should attempt to upload any old software.
How to Evolve Porygon2 into Porygon-Z
Trainers can evolve their Porygon2 into a Porygon-Z by exposing it to the Dubious Disc. Like the Upgrade, this item is downloaded into Porygon2's body, causing its evolution into the unusual Porygon-Z.
The Dubious Disc is a futuristic item that is only obtainable via Space-Time Distortions or by purchasing it outright at the Trading Post. Trainers looking for more information about how to obtain this item should check out our Evolutionary Item guide.
The Dubious Disc is a silver CD-ROM disc housed in a plastic, transparent, magenta protective case. It is "overflowing with dubious data" and has an unknown manufacturer. Ultimately, exposing Porygon2 to this item has a mixed result, as it permanently causes the Pokemon's code to scramble.
Porygon-Z, also the "Virtual Pokemon" now has greater offensive capabilities and the ability to travel across dimensions—making it obvious how this species ended up in Hisui. However, its transformation has resulted in a slew of unorthodox behavior from it. Experts are still divided on whether or not this Pokemon counts as a true evolution rather than a mutation. Its Hisuian PokeDex number is #135.
For all other evolution inquiries, make sure to check out our guide for evolving Pokemon in Pokemon Legends: Arceus.