People who can look like 7 other people in 5 minutes and have 18 different passports with 35 different names.
Work for the part of government who thinks they are
the smart ass and
center of the world. People usually have a
love-hate relationship with them, in the sense that you get amazed by the jobs they do but also hate their snobby know-it-all attitude. In movies they are the people who flash a wallet and roar "FBI!" as they chase after terrorists with legit looking guns.
Favorite phrase is "that information is classified." This phrase is also the reason why people think they are snobby know-it-alls.