Feeling the urge to try something different and/or piss people off? Set up some of the classes mentioned here:
http://www.gamesradar.com/call-duty-black-ops-ii-5-annoying-custom-classes-all-your-trolling-needs/
The fortress
Primary – Assault Shield
Secondary – KAP-40 with Extended Clip
Perk 1 – Flak Jacket
Perk 2 – Toughness
Perk 3 – Tactical Mask
Lethal – Bouncing Betty x 2
Tactical – Shock charge
Wildcard – Danger Close
Scorestreaks – Guardian, Sentry Gun, Death Machine
How it works: This class is the ultimate camper. Find a place on the map that is easily defendable and well-traveled. Drop your bouncing bettys in entryways and use shock charges to cover your flank. Use the assault shield to bait passers by into your explosive traps or plop it into the ground to give yourself extra cover from your victims while you pick them off with your KAP-40. Once you get a few kills for a Scorestreak, add the Guardian and Sentry Gun to your defenses. Anyone walking in your vicinity is as good as dead, and probably, thoroughly ticked.
The circus act
Primary – none
Secondary – Ballistic Knife
Perk 1 – Lightweight
Perk 2 – Scavenger and Fast Hands
Perk 3 – none
Lethal – Combat Axe x2
Tactical – Shock Charge x2 or Concussion Grenades x2
Wildcard 1 – Danger Close
Wildcard 2 – Perk 2 Greed
How it works: Nothing is more humiliating than when you take a Combat Axe to the cranium or get stabbed in the back. So, this class's purpose is to spread those shameful feelings all over the battlefield, courtesy of every bladed weapon you can equip. This one is pretty easy to pull off. When you see your victim, toss a shock charge or concussion grenade (whichever you prefer) in their direction and throw every knife and axe at them while they're dazed. Once they're down, walk over their corpse with the Scavenger perk and repeat.
The Rambo
Primary – none
Secondary – none
Perk 1 – Lightweight and Flak Jacket
Perk 2 – Toughness and Cold Blooded
Perk 3 – Dexterity and Extreme Conditioning
Lethal – Combat Axe
Tactical - None
Wildcard 1 – Perk 1 Greed
Wildcard 2 – Perk 2 Greed
Wildcard 3 – Perk 3 Greed
How it works: The Rambo class makes you a complete badass. You'll be able to move faster, run longer, and take more damage. It's like you're some kind of super soldier. Since you used all of your points equipping the perks, all you have to do is pick up a gun. Until then, you can rely on your trusty knife and tomahawk. Once you do manage to grab another player's modded out firearm you'll have a leg up in any situation, which is sure to strike a nerve with the competition.
The Hacker
Primary - QBB LSW with Full Metal Jacket and Rapid Fire
Secondary – FHJ-18 AA
Perk 1 – Blind Eye
Perk 2 – Fast Hands
Perk 3 – Engineer
Lethal – C4
Tactical – Black Hat x 2
Wildcards – None
How it works: We can't think of many situations that are more frustrating than losing a Scorestreak that you've spent so much time and effort earning. To make your enemies feel that pain of loss, equip the Hacker. This loadout gives you everything you need to completely destroy, steal, and hack any Scorestreak on the map. See an unclaimed Carepackage? Kill the owner and hack it with your Black Hat device. Turrets blocking the way? Blow them up with C4. Incoming air support? Shoot it down with your FMJ equipped light machine gun or rocket launcher. Watching all that effort getting vaporized in a cloud of fire and smoke is sure to get your enemy's tear ducts flowing.
Silent but deadly
Primary – none Secondary – KAP-40 with Tactical Knife and Suppressor
Perk 1 – Ghost and Blind Eye
Perk 2 – Cold Blooded
Perk 3 – Dead Silence
Lethal – None
Tactical – Smoke Grenade or Flashbang
Wild Card 1 – Perk 1 Greed
Wild Card 2 – Secondary Gunfighter
How it works: How do you fight that which cannot be seen? Well, you can't really. That's why we suggest our Call of Duty ninja class. Just do want ninjas do. Hide in the shadows, perch in high places, and wait for the perfect moment to strike with an up-close and personal knife to the gut. If you want to add extra humiliation, toss a smoke grenade or Flashbang into a group of enemies, run in, and slice up everyone. Standing over a pile of bodies will be awesome for you, and demeaning for them. Annoyance accomplished.