In-game description
The Pokémon is prone to wild stat changes.

Simple  is an Ability. It's the signature ability of Bambouse.


In Battle

Simple doubles the number of stages that a stat is increased when the move, Ability or item is used. For example, if Defense Curl is used, the screen will display that the user's Defense has increased by two stages ("sharply rose") and the game will store the user's Defense stage as +2 stages, doubling the user's Defense as expected. Similarly, Tail Whip targeting a Pokémon with Simple will cause its Defense to directly drop by two stages.

As a result, moves like Defense Curl can only be used up to three times before they will fail (as the user's Defense stage will be the maximum of +6 stages). If Psych Up is used on a target with Simple, the doubled stages will be copied. Using Baton Pass to a recipient with Simple will not cause the recipient to receive stat stages of double effect; if a Simple Pokémon uses Baton Pass itself, it will transfer the doubled stat stages. Similarly, if a Pokémon boosts its stats and then receives Simple through a move like Skill Swap, its pre-existing stat changes will not be doubled and nothing further will happen if it loses Simple.

The move Simple Beam can change the target Pokémon's Ability to Simple.

Outside of Battle

Simple has no effect outside of battle.

Pokémon with Simple

# Pokémon Types First Ability Second Ability Hidden Ability
012MS Bambouse Normal Grass Run Away Simple None