Pokémon Black 2 & Pokémon White 2

With the new games, there are bound to be some extra Pokémon forms within it. In the game, various Pokémon have brand new forms added within a variety of circumstances.

Tornadus - Therian Forme
US Name: Tornadus Therian Forme Jp. Name: Tornadus Sacred Beast Forme Type: Flying Ability: Regenerator Height: 1.4m Weight: 63kg First Appearance: Pokémon Black 2 & White 2 Details: This form of Tornadus turns Tornadus into a full bird Pokémon. It's not completely obtainable within Pokémon Black 2 & White 2, but requires capture in the side game Pokémon Dream Radar. From there, it can be sent to Black 2 & White 2. The forms are interchangeable using the Reveal Glass. When switched from the Pokémon caught with Dream Radar, it has its Hidden Ability. It has a larger focus on Defense, Special Defense and Speed
Thundurus - Therian Forme
US Name: Thundurus Therian Forme Jp. Name: Thundurus Sacred Beast Forme Type: Electric/Flying Ability: Volt Absorb Height: 3.0m Weight: 61kg First Appearance: Pokémon Black 2 & White 2 Details: This form of Thundurus turns Thundurus into a flying serpent Pokémon. It's not completely obtainable within Pokémon Black 2 & White 2, but requires capture in the side game Pokémon Dream Radar. From there, it can be sent to Black 2 & White 2. The forms are interchangeable using the Reveal Glass. When switched from the Pokémon caught with Dream Radar, it has its Hidden Ability. It has a larger focus on Special Attack
Landorus - Therian Forme
US Name: Landorus Therian Forme Jp. Name: Landorus Sacred Beast Forme Type: Ground/Flying Ability: Intimidate Height: 1.3m Weight: 68kg First Appearance: Pokémon Black 2 & White 2 Details: This form of Landorus turns Landorus into a quadraped Pokémon. It's not completely obtainable within Pokémon Black 2 & White 2, but requires capture in the side game Pokémon Dream Radar. From there, it can be sent to Black 2 & White 2. The forms are interchangeable using the Reveal Glass. When switched from the Pokémon caught with Dream Radar, it has its Hidden Ability. It has a larger focus on Attack
Black Kyurem
US Name: Black Kyurem Jp. Name: Black Kyurem Type: Dragon/Ice Ability: Teravolt Height: 3.3m Weight: 325kg First Appearance: Pokémon Black 2 & White 2 Details: This form covers the cover of Pokémon Black 2 and features in the upcoming movie: Kyurem & The Sacred Swordsman Keldeo. Like Zekrom, it has its special overdrive mode where its tail gets active, but it also gets some wires extrude from its tail. It can learn the special move Freeze Shock. The form change is done using the special item, DNA Splicers which is found in Giant Chasm after capturing Kyurem. When you use this item, you have to select Kyurem and either Reshiram or Zekrom. This will merge the Pokémon together into a far stronger Pokémon. This can be reverted at any time, using the item. Any changes to Kyurem such as Level and EVs carry over to each form of Kyurem, while Reshiram or Zekrom remain untouched. For example, if you fuse a Level 70 Kyurem and a Level 70 Reshiram, and level Kyurem up to Level 92, when you defuse them, Kyurem will remain Level 92 and Reshiram will still be Level 70. However, the moves on Kyurem will reset to the last four in its level up from the current level.
White Kyurem
US Name: White Kyurem Jp. Name: White Kyurem Type: Dragon/Ice Ability: Turboblaze Height: 3.6m Weight: 325kg First Appearance: Pokémon Black 2 & White 2 Details: This form covers the cover of Pokémon White 2 and features in the upcoming movie: Kyurem & The Sacred Swordsman Keldeo. Like Reshiram, it has its special overdrive mode where its tail gets active, but it also gets some wires extrude from its tail. It can learn the special move Ice Burn. The form change is done using the special item, DNA Splicers which is found in Giant Chasm after capturing Kyurem. When you use this item, you have to select Kyurem and either Reshiram or Zekrom. This will merge the Pokémon together into a far stronger Pokémon. This can be reverted at any time, using the item. Any changes to Kyurem such as Level and EVs carry over to each form of Kyurem, while Reshiram or Zekrom remain untouched. For example, if you fuse a Level 70 Kyurem and a Level 70 Reshiram, and level Kyurem up to Level 92, when you defuse them, Kyurem will remain Level 92 and Reshiram will still be Level 70. However, the moves on Kyurem will reset to the last four in its level up from the current level.
Keldeo - Resolute Form
US Name: Keldeo Resolute Form Jp. Name: Keldeo Resolute Form Type: Water/Fighting Height: 1.4m Weight: 48.5kg First Appearance: Pokémon Black 2 & White 2 Details: This form of Keldeo is not a massive change from the standard Keldeo, featuring a larger horn and a longer mane. It doesn't appear to have an effect on its stats but is only in this form when Keldeo knows the move "Secret Sword", which is taught in Pledge Grove