0 someone who tries to find out secret information, especially about another country -- tajny agent
Many of them are partly based on fact, which the author must have obtained in the course of work as a secret agent.
He had been indiscreet, but, then, indiscretion is not generally the characteristic of a secret agent.
The secret agent faces it alone.
This incarnation of the character was blonde, wore a red and blue jumpsuit, and acted more like a secret agent rather than a superhero.
He is also thought to be a secret agent.
Doing so they earn themselves a new mini-game, which they can use to train their skills as a secret agent.
Ensuing events leave no room for doubt that his true identity is that of a highly trained secret agent.
The fictional secret agent is more often a loner, sometimes amoralan existential hero operating outside the everyday constraints of society.