Possible Clues:

• Morality play shows fallen woman - Mary? Wrong name
• The ordinary person can be very mean
• These actors do them badly
• Joe Sixpack
• Ordinary person; play
• Morality play for himself?
• Anybody - the hero of a morality play - Observer crossword
• Mystery play character always confused many
• The ordinary person
• Morality play seen in theatre, very mannered