Possible Clues:

• Mr. Hyde, e.g.
• *Mr. Hyde, for Dr. Jekyll
• Other half to make changes and say nothing
• Steve Rogers, for Captain America
• Sound like it¿s in church, for example, with nothing for me too perhaps?
• Very close friend who seems almost part of oneself
• Batman, to Bruce Wayne
• Bruce Wayne, for one
• Leaders of the econuts embraced by Al Gore, perhaps, or another personality
• *The seamster's acclaimed skill for refashioning gave him an ..