(in order of appearance)
| Eteocles: | son of Oedipus, king of Thebes, and commander in chief |
| Scout: | trusted lieutenant in the Theban army |
| Chorus of Theban Women: | women of Thebes, whose husbands and sons must fight to defend the city in peril |
| Melanippus, Polyphontes, Megareus, Hyperbius, Aktor, Lasthenes: | the Theban generals |
| …and more… | Theban maids, soldiers, and attendants |