ɪɾ ɪz ɹᵻvˈiːld ɪn hiː ʃˌæl θˈʌndɚɹ ɪnðə skˈaɪ ðˈæt "sˈɛθoʊz" ɪz ˈæktʃuːəli ˈɛmɚsən ænd wˈɔltɚz hˈæfbɹˈʌðɚ, ðɪ ɪlədʒˈɪɾᵻmət sˈʌn ʌv ðɛɹ fˈɑːðɚ ænd hɪz mˈɪstɹəs, hˌuː hɐdbɪn ðɛɹ mˈʌðɚz bˈɛst fɹˈɛnd.
It is revealed in He Shall Thunder in the Sky that "Sethos" is actually Emerson and Walter's half-brother, the illegitimate son of their father and his mistress, who had been their mother's best friend.