It was later added after a few episodes had been completed, but, because the episodes aired out of order, the insignia appears then disappears from episode to episode (if viewing by airdate order).
ɪt wʌz lˈeɪɾɚɹ ˈædᵻd ˈæftɚɹ ɐ fjˈuː ˈɛpɪsˌoʊdz hɐdbɪn kəmplˈiːɾᵻd, bˌʌt, bɪkˈʌz ðɪ ˈɛpɪsˌoʊdz ˈɛɹd ˌaʊɾəv ˈɔːɹdɚ, ðɪ ɪnsˈɪɡniə ɐpˈɪɹz ðˈɛn dˌɪsɐpˈɪɹz fɹʌm ˈɛpɪsˌoʊd tʊ ˈɛpɪsˌoʊd ɪf vjˈuːɪŋ baɪ ˈɛɹdeɪt ˈɔːɹdɚ.