Possible Clues:

• Cub reporter of comics
• NFL great Merlin
• Actor Merlin
• Merlin in football's Hall of Fame
• Jimmy ___, Clark Kent's pal
• With 52-Down, showbiz's Mary-Kate and Ashley
• Mary-Kate or Ashley, e.g.
• '60s ''Action Comics'' regular
• "The Daily Planet" reporter
• Actress Elizabeth with older twins