FBI agent (Lost Verizon 1)

"Keep talking creepo."

- The FBI agent, spying on Moe.

The FBI agent is a man who works for the FBI.

History
He was seen spying on Moe Szyslak, who himself was spying on Marge. As Moe blathered on about how he loved "Midge", the FBI agent was watching and listening to him. The agent told Moe to keep talking, and his partner said that every word would buy Moe "another year in the slammer."