___ Octavius aka Doctor Octopus (4)

I believe the answer is:

otto

(Other definitions for otto that I've seen before include "Something essential" , "____ Preminger, US film director born in Austria" , "Something oily" , "Palindromic German boy's name" , "Four-stroke cycle -- palindromic name" .)

I've seen this clue in the USA Today.

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