Location: Slateport City, Verdanturf Town, Fallarbor Town, Lilycove City

Exclusive to these games, the Cosplay Pikachu is a special form of Pikachu that you get given but it can change its appearance. To do this, you need to simply go to any of the Pokémon Contest halls in the region and go to the dressing room. When there, talk to the Pokémon Breeder and she will offer to change Pikachu's costume for you. In doing so, Pikachu will learn a new move. This Pikachu cannot breed or evolve

Cosplay Pikachu	Pikachu Belle	Pikachu Libre	Pikachu Ph. D.	Pikachu Pop Star	Pikachu Rock Star
	Icicle Crash	Flying Press	Electric Terrain	Draining Kiss	Meteor Mash

Location: Fallarbor Town

In Professor Cozmo's house in Fallarbor Town, you will find a strange meteorite in the back. If you interact with the meteorite, you can change Deoxys form. It scrolls through them in this order: Normal, Attack, Defense, Speed and then back to Normal.

Normal Forme	Attack Forme	Defense Forme	Speed Forme
Base Stats: HP: 50 Attack: 150 Defense: 50 Sp. Attack: 150 Sp. Defense: 50 Speed: 150	Base Stats: HP: 50 Attack: 180 Defense: 20 Sp. Attack: 180 Sp. Defense: 20 Speed: 150	Base Stats: HP: 50 Attack: 70 Defense: 160 Sp. Attack: 70 Sp. Defense: 160 Speed: 90	Base Stats: HP: 50 Attack: 95 Defense: 90 Sp. Attack: 95 Sp. Defense: 90 Speed: 180

Location: Littleroot Town

In Professor Birch's laboratory in Littleroot Town. In the south-east of the laboratory you will find some cardboard boxes. Interact with these boxes and Rotom will change its form and learn a new move with that goes with its form.

Rotom	Mow Rotom	Frost Rotom	Heat Rotom	Fan Rotom	Wash Rotom
	Leaf Storm	Blizzard	Overheat	Air Slash	Hydro Pump
Base Stats: HP: 50 Attack: 50 Defense: 77 Sp. Attack: 95 Sp. Defense: 77 Speed: 91	Base Stats: HP: 50 Attack: 65 Defense: 107 Sp. Attack: 105 Sp. Defense: 107 Speed: 86

Location: Route 123

In the Berry Master's house in Route 123, you will find this person talking about the Gracidea flower from Sinnoh. If you show him a Shaymin, he will give you the Gracidea which allows you to change Shaymin's form to its Sky Forme from 5am to 8pm every day.

Land Forme	Sky Forme
Ability: Natural Cure	Ability: Serene Grace
Base Stats: HP: 100 Attack: 100 Defense: 100 Sp. Attack: 100 Sp. Defense: 100 Speed: 100	Base Stats: HP: 100 Attack: 103 Defense: 75 Sp. Attack: 120 Sp. Defense: 75 Speed: 127

Location: Mauville City

In Mauville City's main area, you will find a special mirror shop on the left hand side. If you show them a Tornadus, Thundurus or Landorus, they will give you the Reveal Glass item which allows for you to freely change form between each of the Pokémon

Therian Forme
Ability: Regenerator	Ability: Volt Absorb	Ability: Intimidate
Base Stats: HP: 79 Attack: 100 Defense: 80 Sp. Attack: 110 Sp. Defense: 90 Speed: 121	Base Stats: HP: 79 Attack: 105 Defense: 70 Sp. Attack: 145 Sp. Defense: 80 Speed: 101	Base Stats: HP: 89 Attack: 145 Defense: 90 Sp. Attack: 105 Sp. Defense: 80 Speed: 91
Incarnate Form
Ability: Prankster Hidden Ability: Defiant	Ability: Prankster Hidden Ability: Defiant	Ability: Sand Force Hidden Ability: Sheer Force
Base Stats: HP: 79 Attack: 115 Defense: 70 Sp. Attack: 125 Sp. Defense: 80 Speed: 111	Base Stats: HP: 79 Attack: 115 Defense: 70 Sp. Attack: 125 Sp. Defense: 80 Speed: 111	Base Stats: HP: 89 Attack: 125 Defense: 90 Sp. Attack: 115 Sp. Defense: 80 Speed: 101

Location: Gnarled Den

After you have capture Kyurem in the Gnarled Den, which requires Reshiram and Zekrom in your squad, you can use the Dowsing Machine and to the left of the cave you will find the DNA Splicers. This item allows for Kyurem to fuse with Reshiram or Zekrom to get its alternate forms

Ability: Pressure	Ability: Teravolt	Ability: Turboblaze
Base Stats: HP: 125 Attack: 130 Defense: 90 Sp. Attack: 130 Sp. Defense: 90 Speed: 95	Base Stats: HP: 125 Attack: 170 Defense: 100 Sp. Attack: 120 Sp. Defense: 90 Speed: 95	Base Stats: HP: 125 Attack: 120 Defense: 90 Sp. Attack: 170 Sp. Defense: 100 Speed: 95

Location: Mauville City

Located within Crooner's Café in Mauville City, you will find this person who is willing to teach Keldeo and Meloetta their secret moves of Secret Sword and Relic Song respectively. When Keldeo learns this move, its form is automatically changed whereas Meloetta changes form when the move is used.

Ordinary Form	Resolute Form
Aria Forme	Pirouette Forme
Base Stats: HP: 100 Attack: 77 Defense: 77 Sp. Attack: 128 Sp. Defense: 128 Speed: 90	Base Stats: HP: 100 Attack: 128 Defense: 90 Sp. Attack: 77 Sp. Defense: 77 Speed: 127

Location: Slateport City

In the Pokémon Fan Club in Slateport City there is this Pokémon Breeder who will groom your Furfrou. This form change is purely aesthetic with no extras in battle. These forms, unlike in X & Y, are all unlocked at the very beginning. After a certain amount of time, or if you put your Pokémon in the box, then Furfrou will revert

Natural Form	Heart Trim	Star Trim	Diamond Trim	Deputante Trim
Matron Trim	Dandy Trim	La Reine Trim	Kabuki Trim	Pharaoh Trim