Possible Clues:

• One awaited by Vladimir and Estragon
• Unseen title character of 1953
• One waited for move, the tiniest amount
• Title character who never arrives in a Beckett play
• Title character not requiring an actor
• "Waiting for ___"
• Had something
• Unseen title character in a classic play
• "Waiting for —"
• "Waiting for ___" (Beckett play)