Men in Black

The Men in Black, founded in the U.S. in the mid-1950s, began as a small and poorly funded government organization devoted to making contact with extraterrestrial life known as the Baltians. They were initially seen as a joke, but did make contact on March 2, 1961, outside New York City.

It was decided to make Earth an apolitical zone for aliens without a planet, and the organization broke its government ties to become the Men in Black, which became the force to conceal and police the aliens that came to Earth. The founding members were the 7 agents present at the landing, plus an amateur astronomer and a young man who got lost going to see his girlfriend. This last became Kay, and one of the agents became his partner Dee. The MiB has continued since then, with Zed as its senior agent, to protect the normal citizens of Earth from alien threats and police extraterrestrial immigrants, with notable members including Bee, Jay, and Elle.

-Taken from Men in Black Wikia

Battle vs. Plumbers (by Thundrtri)
Plumbers: X5 MIB:  X5

Five Plumbers are waiting outside of a space station when suddenly, plasmatic bolts of energy fly past them. One is hit.

Plumbers: X4

MIB: X5

5 men in suits and shades come running around the corner in the space station firing their weapons.

"GET DOWN!" the lead Plumber yells as the MIB open fire upon them. The leader draws his plasma bblaster and fires it at one of the MIB.

Plumbers: X4

MIB: X4

The MIB members charge towards a wall, firing their de-atomizers as they do. The leader walks slowly to the corner and unholsters his mini de-atomizer. He rounds the corner and shoots at a Plumber.

Plumbers: X3

MIB: X4

Two of the Plumbers run into the maze of hallways, leaving one left. The last Plumber fires his energy rifle as the MIB round the corner. His shot misses and he runs into the halls.

The MIB leader holsters his mini de-atomizer and pulls out his noisy cricket. Firing the tiny pistol at the escaping Plumber.

The green energy blast hits right next to the Plumber and he is thrown to the ground. His energy rifle skids away from him and he unholsters his energy pistol. Firing the pistol upon the advancing MIB, he picks one off. Darkred

Plumbers: X3

MIB: X3

A MIB member shoots his series 4 de-atomizer at the downed Plumber.

Plumbers: X2

MIB: X3

The last two Plumbers run out into the main part of the space station. Running over to a small wall, they grab their energy assault rifles and load them. The MIB emerge from the halls, firing their weapons as they do. The Plumbers unleash their energy assault rifles. The leader hits one of the MIB. Darkred

Plumbers: X2

MIB: X2

The last two MIB charge at the wall, the last regular agent shoots his tri barreled plasma gun and hits one of the Plumbers. X1

MIB: X2

The Plumber leader runs behind a large machine and reloads his energy assault rifle. Hearing the footsteps of the nearing MIB, he sets a lit thermal detonator on the ground and escapes.

The MIB agent rounds the corner just as the detonator explodes. Darkred

Plumbers: X1

MIB: X1

The MIB leader runs up to the Plumber leader. The two go back and forth, exchanging kicks and punches. The two split apart and aim their pistols at eachother. Suddenly a voice comes on over the intercom, "The training excercise has been completed."

The two warriors lowers their weapons and watch as their comrades apear from the halls.

WINNER: TIE

Battle vs. Blood Gulch Squads (by Utter noob)
No battle written.

Winner: Blood Gulch Squads

Expert's Opinion
The Blood Gulch Squads were able to beat the Men in Black thanks to their armor and experience, despite the Men in Black having more advanced weaponry.