The Aparo and Fleisher Spectre was directly rooted in the brutal (and often almost childlike) original Spectre as created by Jerry Siegel (he of Superman creation fame) and artist Bernard Bailey. The original series began in February 1940 in More Fun Comics #52.
Probably only Aparo's work on Batman supercedes his fame in comics circles for doing The Spectre with Michael Fleisher for a short run in Adventure Comics in the 1970s
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