FusionDex

If Porysion finds a program it likes on a computer, it duplicates it before separately tinkering the code on both. While the tests it does on each file vary in scale and never repeat between both versions, they somehow always end up becoming a virus.

When their brains, now divided in two, are thinking the same thoughts, these Pokémon exhibit their maximum power. Additional software was installed to make it a better Pokémon.