Possible Clues:

• Monocled food mascot
• Nattily dressed snack food mascot
• Advertising figure with a monocle
• Advertising figure with a cane
• Advertising 'spokesman' since 1916
• Mascot that's a shell of a man?
• Nattily dressed ad figure
• Longtime logo with a top hat and monocle
• Iconic Kraft Foods mascot
• Mascot since 1916