'Is there anybody here who is NOT an alien?' - Agent J (played by Will Smith) in Men in Black
Who is Jay?
Agent J is a member of the organisation Men in Black, an undercover network of highly trained agents whose job is to protect Earth from aliens. The MiB team monitors and suppresses, where necessary, extra-terrestrial activity on our planet. There's no doubt that beings from other planets are among us, and sometimes they aren't here for peaceful purposes. Jay and his fellow agents, under the command of Agent O, root out anti-Earth forces and eliminate them.
If there's a Will, there's a way
Agent J is a cool dude in black. Nothing fazes Agent J, and he keeps his good humour and sense of duty in even the most bizarre situations.
When he joined MiB, he was full of youthful enthusiasm and boundless energy. But, over the years, he has calmed down a lot and is now a well-respected senior agent, although he still hasn't quite conquered his natural tendency to be arrogant and loud-mouthed.
Is that an alien I see before me?