99 is to 86 as 13 is to ... ?
No, the answer is not a number, but two words!
Agent 99 and Agent 86 were fictional characters in the American comedy television series called "Get Smart". Agent 99 was the girlfriend of Agent 86 and they were eventually married.
Reference: http://en.wikipedia.org/wiki/Get_Smart
The original name of "Agent 13" was Sharon Carter, martial arts expert and a weapons specialist who appeared occasionally in the Marvel Comics Captain America comics strips and Carter was the girlfriend of Captain America.
Reference:
(i) http://www.geocities.com/Hollywood/2855/carter.html(ii) http://en.wikipedia.org/wiki/Sharon_Carter
Consequently, the required solution to the puzzle must be Captain America.
Edited on March 2, 2007, 4:31 am