Ghetsis' Silvally (Truth and Ideals)

Ghetsis' Type: Null is a Pokémon owned by Ghetsis as of Chapter 52: Regrets of the Past. Utilizing an exploit Ghetsis had acquired due to having stolen some of Arceus' powers, Ghetsis gets a second chance to have three wishes granted by Hoopa. While Ghetsis' first wish remains unchanged, Ghetsis actually wishes to acquire a Pokémon which can "much more easily fight against and even kill deities". Hoopa, due to being manipulated by Ghetsis' new power, granted the wish without question, as Hoopa forged into existence a Type: Null that would stay by Ghetsis' side for the remainder of the story. While starting off weak and going through absolutely brutal training on par with Ghetsis' usual, near lethal training methods, Type: Null eventually evolves into its recently announced evolution, although according to Ghetsis and Colress, they both had to use lethal force against it to get it to evolve at all, as they had to torture Type: Null into evolving before it would actually do so. Upon evolving, however, it had more or less became completely insane due to Ghetsis having broken its mind...