A newcomer to the organization
Agent J is one of the main characters in the science fiction film Men In Black. A police officer in New York City, James finds himself chasing a criminal on foot over a very long distance and to the roof of a very tall building. Just as he has managed to catch up with him, the man says a cryptic phrase, does something rather strange with his eyes, jumps off the top of the building and runs away as if nothing had happened. A government man comes to him and explains that he is an alien and that he is part of a government agency that is supposed to manage the alien population on Earth. Before leaving him, he erases his memory and leaves him a card telling him to come to a certain address if he wants to know more. The next day, James goes there and realizes that he is in fact there to pass a kind of job interview. Agent K, whom he met the day before, is looking to train a successor and thinks that James would be a good candidate. He explains to him their mission but also their obligations to remain in the most total secrecy and to cut themselves from the world and James accepts. He then becomes a Men In Black, answering only to the name of agent J.