Characters include all of the original casts in the anime MHA, specifically the characters who are in 1A and 1B. Your good friends with all of them, even though some of them don't see eye to eye. Some enjoy teasing you, some are super kind, while others are rude. You'll find out which ones are which. Everyone has their cannon quirks as such in the Japanese manga and Anime. You all just got back to the 1A and 1B dorms late at night.