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The headquarters of the B-Button League
The B-Button League is an organization in the Pokémon anime that aims at ultimate strength and beauty without evolving their Pokémon. This seems to be centered around particularly weaker Pokémon such as Magikarp and Feebas. There are two known members of the organization. They are the leader, Haley, who has a powerful Feebas, and her younger sister Oralie, who has a very powerful Magikarp. Its only known headquarters is located in Jubilife City. It appeared for the first and only time to this date in Ya See We Want an Evolution. In this episode, Oralie battles Ash and Dawn with her Magikarp, defeating Dawn's Piplup and drawing with Ash's Pikachu. Team Rocket, disguised as a fake organization known as the "C-Button League", steals Haley's Feebas and Oralie's Magikarp so as to attempt to evolve them along with Pikachu with an evolution machine they bought from the Magikarp salesman. They held an idea that these already powerful Pokémon would become even stronger Pokémon after undergoing evolution, in which they would be given to their boss. However, the machine was merely a fake, being unable to do any of the things the Magikarp salesman promised. Team Rocket then attempted to transform their machine into a giant robot, which also failed due to the fact the robot had to have made one successful evolution before being able to transform. After this they were blasted off by the two powerful fish, and Ash, Dawn, and Brock left, never seeing the B-Button League again to date.
- The B-Button League is a reference to the in-game technique to stop Pokémon from evolving. In the games, a player may prevent a Pokémon from evolving by level-up by pressing the B button before the evolution is complete. This was the only way to keep a Pokémon from evolving by level-up until the introduction of the Everstone in Generation II.