Seymour Krelborn: A menial laborer at Mushnik’s Flower Shop, Seymour Krelborn is the improbable hero of the story. Nebbish-like and insecure, he is naive and feels much put-upon. In spite of his flaws, he’s a sweet and well-meaning little man. Seymour is the owner of the carnivorous plant, Audrey II.
Audrey: The gum-snapping, bleached-blond secret love of Seymour’s life, Audrey works with Seymour at the flower shop. Lacking in education and self-esteem, she suffers from feelings of hopelessness at her situation in life, including her abusive relationship with her boyfriend, Orin Scrivello. Seymournames his plant after her.
Mr. Mushnik: Owner of Mushnik’s Flower Shop, a failing business on Skid Row, Mr. Mushnik is given to cursing in Yiddish. He is a man who seldom smiles and often yells.
Orin Scrivello: Audrey’s dentist boyfriend, Orin Scrivello is a motorcycle-riding black leather jacket-wearing tough-guy. He is tall, dark, handsome, and sadistic. His fondness for his own nitrous oxide proves to be his undoing.
Audrey II: A wise-cracking anthropomorphic cross between a Venus flytrap and an avocado with teeth, Audrey II is Seymour’s favorite and soon-famous plant. Seymour purchased the plant at Chang’s Flower Shop during a mysterious total eclipse of the sun; but once the plant has the taste of human blood there is no stopping it.
Crystal, Ronette, and Chiffon: Three female street urchins who function as participants in the action and as “doo-wop” chorus girls outside it, Crystal, Ronette, and Chiffon often sing directly to the audience in a hip, narrative style.
Patrick Martin: A sleazy opportunist, Patrick Martin tries to talk Seymour and Mr. Mushnik into leaf cuttings of Audrey II.
Bernstein: An uptown bigshot from NBC, Bernstein offers Seymour his own gardening show.
Mrs. Luce: The wife of the editor of Life magazine