Master Ball

The Master Ball is an item from the Pokémon series and is a more powerful version of the Poké Ball. In the games, its mainly used to catch rare and Legendary Pokémon due to it guaranteeing to catch any wild Pokémon it is thrown at, with few exceptions. It is introduced as an item in the Super Smash Bros. series in Super Smash Bros. for Nintendo 3DS / Wii U, where it releases Legendary Pokémon. In previous Super Smash Bros. installments, regular Poké Balls could release Legendary Pokémon, but this is no longer the case.