Complex sentence: He feared that this would cause him to be "consigned... to the one-note rock theatricality" of Kiss and Alice Cooper, and desired to convince rock and pop fans who had previously dismissed him that he was "more than a cartoon".
Split into simpler sentences: He feared that this would cause him to be "consigned... to the one-note rock theatricality" of Kiss and Alice Cooper. Manso desired to convince rock and pop fans who had previously dismissed him that he was "more than a cartoon".