Based on available information, Momi (localized as Cheryl) appears in episode 10, "The Old Chateau," of *Pokémon Generations*. She arrives at the shadowy Old Chateau located within Sinnoh's Eterna Forest, accompanied by her Chansey. Their exploration of the haunted location brings them face-to-face with wild Haunter. No further canonical details exist regarding her background, personality, development, or other media appearances.