In the core series games
When used from the Bag in a wild encounter, it attempts to catch the wild Pokémon with a catch rate modifier of 1×. If caught, the Pokémon's friendship is set to 200. (It has no effect on the friendship of Pokémon hatched in a Friend Ball.)
If used on an Ultra Beast, the catch rate modifier is instead always set to 0.1×.
The Friend Ball cannot be used in situations in which Poké Balls cannot be used, such as in wild battles with two or more opponents currently present or against a trial Pokémon. If used in a Trainer battle, the opposing Trainer will bat the ball away, wasting the item.
Fling fails if the user is holding a Friend Ball.
In Pokémon HeartGold and SoulSilver only, Friend Balls cannot be held. This is to prevent them being held by a Pokémon traded to Pokémon Diamond, Pearl, and Platinum, where the item does not exist.
||A Ball that makes Pokémon friendly.
|A Poké Ball that makes caught Pokémon more friendly.
|A strange Poké Ball that will make the wild Pokémon caught with it more friendly toward you immediately.
Pokémon Sun, Moon, Ultra Sun, and Ultra Moon
In Pokémon Sun, Moon Ultra Sun, and Ultra Moon, Pokémon Breeders keep their Pokémon in Friend Balls.
In the anime
In the manga
In the TCG
In other languages