Ash's Gengar

Ash's Gengar is a mischievous Pokémon who loves to play pranks on people. He is also very loyal to Ash and will always protect him when he is in danger. Gengar was originally a Gastly who was captured by Ash in the Johto region. At first, Gengar was very difficult to train, as he was always getting into trouble. However, Ash eventually managed to earn Gengar's trust and friendship, and the two of them became inseparable. Gengar has since gone on to become one of Ash's most powerful and reliable Pokémon. He has helped Ash win many battles, and he is always there for him when he needs him most.