Possible Clues:

• “Awesome!”
• "___ Mario Bros."
• A1
• Word that's its own synonym when a 'b' is added to the end
• Word that's its own synonym when a "b" is added to the end
• Really excellent police officer
• Wizard conjures up ermine jackets
• Oddly smug, for a senior cop
• 'Outstanding!'
• Apartment 1A resident, perhaps