Manually Addable?: No

Method:
The Shiny Pokémon are the more common entrance animation. When you encounter and send out a Shiny Pokémon, you will notice that it is of a different colour. In addition to this, a circle of sparkles will go around the Pokémon to indicate that it is shiny.

Click here for more details on Shiny Pokémon

Manually Addable?: No

Method:
In Black 2 & White 2, you will be able to find a few rare Pokémon dotted around the areas of Unova. When you capture these Pokémon, you will learn that they were once under the control of the trainer N. Upon entry in battle, they have a special sound and are surrounding by a ring of green/yellow diamonds. Unfortunately, N's Pokémon can't be shiny.

Click here for more details on N's Pokémon

Manually Addable?: Yes

Method:
In Black 2 & White 2, there is one final animation added. If you use your Pokémon within the PokéStar movies and deviate from the script, while still accomplishing the mission, your Pokémon will become a star and will be given this animation. Upon entry of battle, a star will shoot up from the Pokémon and bounce back down.

Click here for more details on PokéStar Studios