The Mega Ring is a special item in the Pokémon video game series that allows certain Pokémon to undergo a transformation known as Mega Evolution. This transformation enhances a Pokémon's abilities, stats, and sometimes even changes its appearance. To use a Mega Ring, a player must have a compatible Pokémon and the corresponding Mega Stone. In the games, the Mega Ring is typically obtained during the storyline and is worn by the player character. When activated during battle, it enables the player to Mega Evolve their Pokémon, providing a strategic advantage. Not all Pokémon can Mega Evolve, and each requires its unique Mega Stone to do so.