Related Clues:

• FBI investigators
• "The X-Files" extras: Abbr.
• Jerry Maguire's ilk
• Some people with sports M.B.A.'s: Abbr.
• Ballplayers' representatives
• Real estate hires
• Team-player liaisons: Abbr.
• Contract reps.
• IRS employees
• Catalysts
• They operate on behalf of others
• They do business on behalf of others
• They act for others
• Because it's about him, no principal is involved
• Not principally as it's about a chap