Distortionlings was something that I made up for a while now. Distortionlings are Pokémon who were made by Giratina. Distortionlings can be any Pokémon you can think of. Yes, even legendries.
Some can act wild (Like the Kommo-o) and some are calm natured (Like the Aggron).

Distortionlings have an alternate form called "Corruption Form." In their Corrupted Form, they are able to use moves that the Pokémon of their species can't even use and gain an additional move which will replace one move that corresponds to the first typing of the Distortionling called "Corruption Hit." Legendary Pokémon Distortionlings are the only Distortionlings who don't have this alternate form.

Distortionlings can't leave the Distortion World without Giratina's permission, if they do, they will decay.