Related Clues:

• Villain's vanquisher
• White knight, stereotypically
• Johnny-on-the-spot, perhaps
• Han or Luke, e.g.
• Sonar user
• Subway purchase, perhaps
• Warship
• Stand-in, for short
• Sandwich shop order
• Super sandwich
• U-boat, e.g.
• Decorated veteran, e.g.
• Footlong, e.g.
• Army-medal recipient
• Dragon slayer