Porygon-Z

Porygon-Z is a Normal-type Pokémon.

It evolves from Porygon2 when traded holding a Dubious Disc. It is the final form of Porygon.

Biology
Although technically a virtual, manmade Pokémon, Porygon-Z does have a physical body. Its head is fuchsia and ovoid in shape with a short, blunt antenna protruding upwards and a blue bill similar to that of a duck. Its eyes are yellow and have black rings, similar to a bulls-eye. The head is completely detached from the body and floats slightly above it. Its smooth, ovoid body is fuchsia with a blue ring connecting its arms. Two arms are loosely connected to their upper body and, other than their blue color, have no features. The tail is also blue and featureless but slightly resembles a paddle.

Porygon-Z was given additional software in order to increase its abilities. The initial idea was to give it the ability to travel through alien dimensions, though it did not work as planned. Instead, the Pokémon began showing highly erratic, unstable behavior and twitchy movements, making it difficult to work with for research. As a result, it is believed the experiment to create Porygon-Z was a failure. This has been attributed to the incompetence of the engineer improperly updating its programming. Because the update caused instability, academics can't seem to agree on whether Porygon-Z should be considered a true Evolution of Porygon2.