Related Clues:

• Soul mate
• DNA lab result
• Carbon copy
• Many superheroes have them
• Significant others?
• Very close friends
• Dating-service goal
• Jekyll and Hyde, e.g.
• Trusted friends
• Superheroes often have them
• Bruce Wayne and Batman, e.g.
• Ideal mate
• GOES?
• Life partners
• Inseparable friends