Possible Clues:

• Singer entertaining queen, for example, reveals a different side
• An officer before journey sees close friend
• Second person?
• Other self
• Secret identity
• Another of your facets
• Peter Parker or Miles Morales, or, as an imperative, a hint to the circled letters
• Lone Ranger, to Tonto
• Relate badly? Try Mr Hyde!
• Ziggy Stardust vis-à-vis David Bowie