Immediately before using any move (except Struggle), a Pokemon with Protean as its Ability will change its type to be the same type as the move it is using. Protean always causes the user to become a single type Pokemon.
Because Protean activates prior to executing a move, the user will receive same type attack bonus on every move it uses regardless of the move’s type (except Struggle) and will always hit with the move Toxic.
When using a move that calls another move (such as Nature Power), the type of the called move will be considered. When using a move that can change type, the type it changes to will be considered. If the type of the user’s move is changed, such as with Electrify or Ion Deluge, the type it changes to will be considered. When using a move that changes the user’s type, such as Camouflage, first Protean changes the user’s type to the type of the move, then the move will either fail or change the user’s type again. When using Curse (unless its type is changed by Electrify), if the user is not already type prior to the activation of Protean, Protean will change the user to type, then the user will use the type effect of Curse on itself (regardless of Crafty Shield and Follow Me orRage Powder).
Protean will not activate if the move fails (unless it fails due to the activation of Protean), if the execution is interrupted entirely (such as by the effect of infatuation or confusion), if the move is prevented by heavy rain or extremely harsh sunlight, or if the move is prevented by Powder. Protean will activate even if the move misses, is blocked by a protection move, or fails to affect the opponent.
The user’s new type remains in effect until changed again or until the user is switched out; negating or replacing the Ability does not change the user back to their original type.
Outside of battle
It is unknown if Protean has an effect outside of battle.
Pokemon with Protean