Related Clues:

• Name adopted when following boxer
• Anna Gram, say, for a wordsmith
• A computer hacker usually uses this
• Regrettably adopting one false identity
• Sasha Fierce, for Beyonce, e.g
• Captain Marvel, for one
• A name by any other name?
• Spy's name, perhaps
• Anonymity protector
• Spy's alternate name
• Undercover’s cover
• Champion boxer with a second assumed name
• Other handle a skipper pulled back
• Bloomer and Earhart, for two
• George Orwell or George Eliot, e.g