Ash's Gengar (Aura)

Ash's Haunter is the eighth Pokémon Ash Calem Ketchum caught in Kanto.

Personality and characteristics
Haunter has a mischievous and happy nature, showing that he enjoys having fun and making people laugh as well as battling, though sometimes this usually involves scaring people. He is also very sensitive, becoming depressed when Ash initially failed to get amused by his humor.

Trivia

 * Haunter is currently the only Ghost-type that Ash has caught.