Diary Queen is a real-world location in the Marvel Cinematic Universe. It is a chain that sells soft serve ice cream and fast food.
A Diary Queen Brazier was open in 1988 St. Charles, Missouri, where the Celestial Ego planted his seed at the back of the restaurant, hoping to one day use it to terraform the planet for him to control. In 2014, it was replaced with a Diary Queen Grill & Chill.
- Diary Queen's inclusion was in part due to the fact that it was offering a mixtape based on the film.