Mimichan

Mimi-chan (ミミちゃん) is a unique character in the Touhou Project series, first appearing in Marisa Kirisame's Good Ending in Phantasmagoria of Dim.Dream. She is a sentient female intercontinental ballistic missile who was originally owned by Yumemi Okazaki and later acquired by Marisa. However, Marisa doesn't know how to use her, leaving her purpose and current status a mystery. Mimi-chan is depicted as a large white missile with black eyes, a red mouth, and a red nosecone, and her design is inspired by the similarly named missile character from the 1986 manga "Don't Leave Me Alone, Daisy." In the Touhou Project world, Mimi-chan is known for her unique identity and, despite never being a playable character or a boss, is beloved by fans and frequently appears in various fan creations such as illustrations and fan games.