Related Clues:

• Self-esteem, taken too far
• Creator of a big head
• Problem for some superstars
• Collection of lions
• Quality many associate with LeBron James
• Roman I
• Trip for one person?
• It often gets fed
• Director's challenge
• A superstar might have a big one
• Pompous asset?
• Swelled head cause
• Handler of defensive functions
• "Me, me, me" attitude
• More-than-healthy sense of self