Related Clues:

• Red, e.g., once
• "Them"
• Friend alternative
• Hostile opponent
• ''Jack and the Beanstalk'' baddie
• Armed adversary
• One of them?
• Fairy tale bellower of the starts of 20-, 31-, 42- and 53-Across
• The Riddler, to Batman
• Goliath, e.g.
• Sworn enemy
• Willie Mays, for one
• "Fee-fi-fo-fum" utterer
• One on the other side
• Jack's fairy tale victim