From the producers:
Drawn and animated by Melbourne-based cartoonist and illustrator Oslo Davis, Melbhattan features more than sixty black and white tableaux of Melbourne each composed to mimic images in Allen’s film.
Melbhattan features an original score by local composer and musician Biddy Connor.
To answer the question: I reckon the lead character would’ve been Oslo Davis instead of Isaac Davis.
Much more information at the official site.