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Fusion Boxes. There are two kinds, Infusion and Defusion. They come in all 18 types. Putting one on a Pokémon adds a type to them making them Triple type or Dual type (if they are single type). Using a Defusion Box takes away a type making a Dual type Single and a Single type, Typeless. You have to activate them with the Fusion Ring which gives the Pokémon an Aura of the type gained (Grey Aura when type is lost). Certain Pokémon will get special Fusion Boxes. The Johto starters for example. Meganium will be Grass/Fairy/Poison, Typhlosion will be Fire/Ground/Fighting, and Feraligatr will be Water/Ice/Steel. There will be more Pokémon Exclusive Fusion Boxes including Kyurem which will become Dragon/Fire/Electric
