- The Old Man, Jacob Hummel
- The Student, Mr. Arkenholz
- The Milkmaid, An apparition
- The Superintendent's wife
- The Superintendent
- The Dead Man, a Consul
- The Lady in Black, Daughter of the Dead Man and the Superintendent's wife
- The Colonel
- The Mummy, the Colonel's wife
- The Young Lady, the Colonel's daughter, but actually the Old Man's daughter
- Johansson, Hummel's servant
- Bengtsson, The Colonel's footman
- The Fiancée, a white-haired woman, formerly engaged to Hummel
- The Cook
- Beggars
- The Nobleman, engaged to the Lady in Black
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