Possible Clues:

• Lucy's brother
• ''Peanuts'' kid
• 'Peanuts' boy
• 'Peanuts' boy with a blanket
• Believer in the Great Pumpkin
• 'Peanuts' blanket carrier
• "Peanuts" blanket carrier
• Fan of the Great Pumpkin
• Member of the Peanuts gang
• Lucy's little brother