Bob ___, co-creator of Batman (4)

I believe the answer is:

kane

(Other definitions for kane that I've seen before include "Famous film by Orson Welles 'Citizen . . . .'" , "Orson Welles's film ` `Citizen ....' '" , "'Citizen . . . .', great film by Orson Welles" , "Great Orson Welles movie 'Citizen . . . .'" , "1941 cinematic citizen" .)

I've seen this clue in The New York Times.

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