The Fast Ball (Japanese: スピードボールSpeed Ball) is a type of Poké Ball introduced in Generation II. It can be used to catch a wild Pokémon, being more likely to succeed against Pokémon that are fast or quick to flee.
When used from the Bag in a wild encounter, it attempts to catch the wild Pokémon. It has an increased catch rate modifier against certain species of Pokémon.
The Fast 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.
While it is intended to be more effective against all Pokémon that can flee, due to a glitch it is only effective against the first three Pokémon in the list of Pokémon that have a 10% chance of fleeing (these three being Magnemite, Grimer, and Tangela). The code was intended to instead check the three tables of Pokémon that have a chance of fleeing (Pokémon that have a 10% chance to flee, Pokémon that have a 50% chance to flee, and Pokémon that always flee).
In Going Apricorn!, Ash, Brock, and Misty each received a Fast Ball from Kurt. Brock used his Fast Ball to catch a Pineco later in the same episode; Ash and Misty's Fast Balls have not been seen or mentioned since, although Ash's Fast Ball makes a cameo appearance in the dub opening theme Believe in Me.
The Fast Ball allows the player to go through their deck, turning over cards one at a time until they find the first evolution card, and then taking that into their hand, shuffling afterward. It debuted in Skyridge.