Delia Ketchum is Ash's mother.
After Ash left Pallet to become a Pokémon Trainer, she befriended a Mr. Mime that she named Mimey and he has lived with her ever since. She is seen after Ash's old adventures end and his new ones start, such as The Right Place and the Right Mime. She also goes on a trip with Ash and Professor Oak to Unova.