When a Pokemon with the Illusion ability switches in on a (non-fainted) Pokemon, it takes the form of the Pokemon it just replaced.
The effect is aesthetic only; the illusion does not change the Pokemon's type or moves. Any direct attack (i.e. not entry hazards, weather conditions etc) will break the illusion
.
| Generation V | Comes out disguised as the Pokémon in back. |
|---|
| # | Name | 2nd ability | Hidden ability |
|---|---|---|---|
| 570 | Zorua | — | — |
| 571 | Zoroark | — | — |
No Pokemon have Illusion as a hidden ability in Pokemon Black & White.