əkˈeɪʒənəli wˈɜːkɪŋ æz ɐ ɹˈaɪɾɚ, kˈʌpɚbˌɜːɡ kɹiːˈeɪɾᵻd ðə nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi θɹˈiː wˈʌnʃˈɑːt kˈɑːmɪk ɑːbnˈɑːksɪˌoʊ ðə klˈaʊn vˌiːˈɛs. ðɪ ˈɛksmˈɛn, ænd hˈændəld ˈɛvɹɪθˌɪŋ fɹʌm ɹˈaɪɾɪŋ ænd ˈɪləstɹˌeɪɾɪŋ tə lˈɛɾɚɹɪŋ.
Occasionally working as a writer, Kupperberg created the 1983 one-shot comic Obnoxio the Clown vs. the X-Men, and handled everything from writing and illustrating to lettering.