The Courier is a minor villain in the book Scorpia.
This unnamed man brings Prime Minister Tony Blair a letter from the crime organization SCORPIA. He is a good spy and good at disguising himself, he is cultivated. The Courier can disguise himself at any means necessary. The Courier brings the government a letter informing them that in two days time they will release nanoshells into English schoolchildren if they do not make the Americans disarm and stop their foreign policy.
The Courier disappears completely after this, he discards his wig and his hair is no longer blond but brown, and he throws off his jacket and now wears sunglasses in the taxi he gets. The Courier then walks off into the Underground and is never found again.