Popcorn is a pink and white striped bag of popcorn with a backward-facing pinkish-red cap and black and purple headphones on. Popcorn is an energetic character, getting hyped up about her music and people she considers to be cool. She is very good friends with Minidisky. Popcorn is also a music composer, as shown at the start of episode 1. On Caffeination Day, Popcorn is shown to be very brave by putting others before herself.