FusionDex

Poryscoon hides away in cyberspace until it evolves fully. The bits of binary code sticking from its cocoon will corrupt the data of Porygon fusions that try to bother it while it rests.

To avoid detection by its enemies, it hides motionlessly beneath large leaves and in the gaps of branches. It is capable of reverting itself entirely back to program data in order to enter cyberspace.