Maybe Minneapolis lost its main character (7)

I believe the answer is:

epsilon

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'character' is the definition.
(epsilon is a kind of letter of the alphabet)

I can't explain the rest of the clue.

(Other definitions for epsilon that I've seen before include "character in Greece" , "Greek character" , "foreign letter" , "Fifth letter of the Greek alphabet" , "Greek letter E" .)

I've seen this clue in The Hindu.

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