004 was the code-name of an unnamed fictional intelligence operative of the 'Double-O' ('00') Branch, an ultra-covert Black Ops unit within the British Secret Intelligence Service (SIS/MI6). The character appeared in EON Productions' 1987 James Bond film The Living Daylights and was portrayed by British actor Frederick Warder. To date, across the James Bond franchise as a whole, there have been five individuals who have held the number 004.
Virtually nothing is known about agent 004. He is one of three 00 operatives sent on a training mission to evade British SAS patrols and penetrate the radar installations on Gibraltar. All three parachute from a Lockheed C-130 Hercules and while 002 is captured on landing, 004 starts scaling the mountain. A lurking assassin singles him out for execution, killing an SAS guard who inadvertently stumbles upon him. Taking hold of 004's climbing rope, the assassin slides a note down to the vulnerable agent, before pulling out a knife and severing the line, causing him to fall to his death on the rocks below. His dying screams alert 007 to the murder. The note, found on 004's lifeless body, reads "Smiert Spionam" (Death to Spies).