Ability · Gen 5 · 1 Pokémon
Imposter
On switch-in, this Pokemon Transforms into the opposing Pokemon that is facing it.
On switch-in, this Pokemon Transforms into the opposing Pokemon that is facing it. If there is no Pokemon at that position, this Pokemon does not Transform.
Imposter was introduced in Generation 5. 1 Pokémon and forms can have it (1 as a hidden ability).
Best Pokémon with Imposter
Ranked by usage in public Pokémon Showdown battles (Champions VGC first, then National Dex OU, SV OU and Champions Singles), with how many of each Pokémon's sets actually run Imposter.
Pokémon with Imposter
As a hidden ability (1)
Imposter FAQ
What does Imposter do?
On switch-in, this Pokemon Transforms into the opposing Pokemon that is facing it. If there is no Pokemon at that position, this Pokemon does not Transform.
Which Pokémon have Imposter?
1 Pokémon and forms can have Imposter, 1 of them only as a hidden ability: Ditto.
Is Imposter a hidden ability?
Yes, every Pokémon listed here gets Imposter as its hidden ability.
What are the best Pokémon with Imposter?
By competitive usage, the most used Pokémon that can have Imposter are Ditto (#144 in Champions VGC, 92.9% run Imposter).
Effect text from Pokémon Showdown (MIT); which Pokémon have it from Showdown's Pokédex, cross-checked against PokéAPI. Unofficial fan site.