You must assemble a 7-person team to combat attacking aliens.

[Cheery Lunatic]

Garrus
Iron Giant
Commander Shepard
Superman
Tarzan (the man talks to fucking gorillas, dude. I'm thinking "Rise of the Planet of the Apes", here)
Hit Girl
Agent K (who else would you call, c'mon)

 

[CardinalPiggles]

Magneto - To destroy the ships before they land
Professor X - To mind fuck any ground forces
Master Chief - To kill off any ground forces


That's it really. Although Prof X could probably do it all on his own.

 

[Sansha]

Sylvanas Windrunner
One of her Val'kyrs.
Irwin Rommel
Jim Raynor
Sarah Lyons
Carl Johnson OR Niko Bellic
Chell

Sylvanas Windrunner and Irwin Rommel are military geniuses.
Sylvanas' Val'kyr can heal and resurrect the dead.
Jim Raynor and Sarah Lyons are good squad leaders, fighting hard with unrelenting courage and stamina, and are capable of making split-second but good decisions.
Carl Johnson/Niko Bellic is a good, loyal fighter - as well as driver and pilot.
And Chell never, ever gives up. Portal gun helps, too.

 

[BboyGrylls]

Aliens are attacking Earth with a huge attack force.

You must assemble a 7 member squad. It can be made of any character, fictional or real.

Here's mine:
Optimus Prime
The Iron Giant
Commander Shepard
Goku
Alex Mercer
Goku
Batman

I think ... just goku would be more than overkill XD

If i want to be fair to the protei... err .. aliens (sorry .. all i see is food when i stare into the eyes of the enemy) it'll have to be

... nah .. lets not be fair ... just "AKUMA" ... and i can sit back .. and enjoy a glass of some of the finest piss, while akuma rapes whatever species thinks it can invade his personal arena (AKA earth)

 

[NewfieKeir]

Dr. Manhatten
Jean Gray
Notch
Batman
Commander Shepard
Hope Summers
Hellboy

Sounds good?

 

[OneEyeX]

All My Fallout Characters from 1-New Vegas

All rocking insane speech skill levels.

Suddenly; Diplomacy even if their race can't hear, see or taste.

They're that good.

 

[justnotcricket]

MacGyver.

What was that? 7 you say? Sorry, I'm having some trouble fathoming why 6 other people need to stand around getting in MacGyver's way ;-)

 

[Blastinburn]

Optimus Prime
Mario (Super Mario Bros Z)
Sonic (Super Mario Bros Z/Sonic's Quest for Power)
Samus Aran
Cole McGrath
Ike (Fire Emblem: Path of Radiance/Radiant Dawn)
Sakura (MageKnight404 hack of Fire Emblem 7)

Runner-ups:
Chopin (Eternal Sonata)
SuperMan
Amaterasu (Okami)
Chuck Noris
Yuri Lowell (Tales of Vesperia)
The Grim Reaper (DiscWorld)
Anyone from Gensoukyoku

edit: added Iron Giant to runner-ups (though it's pacifist)

 

[NinjaOnXTC]

Duke
Gandalf
Tesla
Superman
Doomsday
Iceman (Omega variation(If you'd call it that))
Dr. Who
Somehow, somewhere, some shit is gonna go down...

 

[Blackout62]

The Mythbusters. No that's seven: Adam, Jamie, Tory, Grant, Karie, The Narrator, and whatever local specialist they've brought on so they can perform their dangerous acts safe, sound, and legally.

 

[Owen Majkowski]

Commander Shepard
Grayson hunt
Eddie Riggs
Duke Nukem (from the 90's, not from DNF)
Serious Sam
Doom Marine
Master Chief

 

[OrokuSaki]

7 people on a whole army? That's short handed, but oh well:

Goku
Superman
Kratos
Dante (From Devil May Cry)
Dr. Strange
Wolverine
and Cloud Strife.

 

[ReaperGrimm]

Master chief
Captain Price
Goku
Commander Shepard
Duke Nukem
Ezio
Sargent Jonson

 

[Riddle78]

1) Gabriel Tosh (Starcraft 2): Stealth and VIP elimination.
2) Urdnot Wrex [And by extension,the entirity of clan Urdnot] (Mass Effect games): Soldier,General.
3) Callsign: PSYCHO (Crysis): Soldier,sabatoge.
4) Sovereign (Mass Effect games): Flagship,force support,disruption,superweapon.
5) The Iron Giant (The Iron Giant): Heavy Support,superweapon.
6) A VERY good IS MechWarrior in a MadCat Mk II (MechWarrior) Heavy Support.
7) Jeff "Joker" Moreau piloting the Normandy SR2 [Comes default with EDI](Mass Effect games): Pilot,air support/close air support,transport

Behold! My army to fight off the alien invaders! Wrex comes with a clan,and Soverign...Makes the enemy join us! The rest are just gravy.

 

[Tassarus]

Master Chief John-117
Spartan B-320 (Kat)
Iron Man
Quatre Raberba Winner (anyone that recognizes that name gets a cookie)
Yoda
Eve (Necromancer from Guild Wars)
Latias

Yoda, John, Iron Man, Kat, and Quatre to plan the defense and fight, Eve to look BEYOND sexy and raise armies of recently-dead enemies to throw at the invaders to subsequently raise THEM as well and continue on ad infinitum, and Latias.... because, well... SHES LATIAS

 

[TehChuckles]

Chuck Norris
Mr. T
Neil Patrick Harris
Bruce Willis
Ben Croshaw
Arnold Schwarzenegger
and...
David Tennant.

the plan is to simply overload the invaders with pure awesomeness and make their heads implode.

 

[Owen Robertson]

Me, my 2 brothers, my 3 good friends, and a crack fiend. Always need a scapegoat right?

 

[Phantomess]

The Doctor - obvious reasons, but best summed up with "LET SOMEONE ELSE TRY FIRST!"
Capt. Malcolm Reynolds - because he's kickass, even if he hasn't seen an alien before.
Capt. Jack Harkness - because... well... he's Captain Jack! If he can't stop them, he can seduce them!
Ratchet (from Ratchet & Clank) - he's got experience blowing things up. Plus he has Clank, who is pretty much a sentient backpack
Ford Prefect - Because he'd be funny. Plus all that hitch-hiking would be a fountain of information.
Myself - I'd want to be there to chronicle it all!

... aaaand Rory Williams. Probably.

 

[Peter Storer]

Superman (he's well, superman)
Thor (an actual god of war)
Connor Macleod. (an immortal who has been a warrior for 500 years and who can read the mind of anyone in the world at will)

All things considered the other 4 guys would just be redundant.

 

[jameskillalot]

Goku (things go boom)
Master Chief (has a good record against killing aliens, adept space car drive)
Isaac Clarke (cannot be killed by aliens can fix anything ever made)
Alucard (general survivability and specialized in mass killing and high level duels)
Wolverine (invincibility and murder)
Samus Aran (tactical and survivability)
Glados (as the dispacher)

Pretty sure it would work out well.