- Amphitryon – Husband of Heracles' mother
- Megara – Wife of Heracles
- Lycus – Usurper of the throne of Thebes
- Iris – Messenger of the gods
- Lyssa – Madness
- Heracles
- Messenger – Servant from the court of Heracles
- Theseus – King of Athens
- Chorus of old men of Thebes
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