Men in Black

Everything About Fiction You Never Wanted to Know.

K: We are the best kept secret in the universe. Our mission is to monitor extraterrestrial activity on Earth. We are your best, last, and only line of defense.
We work in secret. We exist in shadow.
J: And we dress in black.

—The introduction to the Men In Black music video by Will Smith

Men in Black is a media franchise consisting of:

The story is centered around a pair of Men in Black helping to protect the people of Earth from alien visitors—and vice versa.

For "Men in Black" as a general character/organization type, see The Men in Black.