From Bulbapedia, the community-driven Pokémon encyclopedia.
| Speed Boost
Speed Boost (Japanese: かそく Acceleration) is an Ability introduced in Generation III.
At the end of each turn, Speed Boost raises the Speed stat of the Pokémon with this Ability by one stage.
Speed Boost will not activate on the turn the Pokémon with the Ability is switched in (even if it gains the Ability after switching in). It will activate if the Pokémon is sent out at the start of battle or due to a previous Pokémon fainting.
Outside of battle
Speed Boost has no effect outside of battle.
Prior to Super Mystery Dungeon, Pokémon with Speed Boost receive a permanent boost to movement speed every 250 turns.
In Super Mystery Dungeon, Speed Boost increases the Travel Speed of a Pokémon with with this Ability by one after one turn of being on the floor, and again every 20 turns afterwards. The boost wears off after five turns.
Pokémon with Speed Boost
In the anime
| The Pokémon's speed increases dramatically when the Ability activates.
|| First Used In
|| Yanmega's body glows green and it can fly extremely fast. While flying, it leaves behind a green trail of energy.
| Jessie's Yanmega
|| Another One Gabites the Dust!
|| Ninjask's outlines glow white and it can fly around extremely fast. However, if Ninjask takes a lot of damage, then it doesn't get a speed increase anymore.
| Paul's Ninjask
|| A Real Rival Rouser!
In the manga
In the Pokémon Adventures manga
In other languages