Katherine Marlowe's Agents

The agents work for Katherine Marlowe and are fiercely loyal adherents of the clandestine organization she heads, employing special forces and covert ops training to confound their opponents. All of them are usually dressed in designer suits and are one of most well-equipped opponents Nathan Drake has faced so far. They are also shown to be capable of the acrobatics Drake displays when trying to murder him in Colombia.[1]  Although the skins for the agents don't vary considerably, their AI is determined by their weapons. For example, shotgunners will rush the player etc...

There are three variations of agents. The first and most common type are standard and elite agents, who use a variety of weapons and use cover intelligently. They will also throw grenades if Drake stays behind cover for extended periods. The second type are armored soldiers carrying shotguns or M9s - these types of enemies will slowly walk towards Nate whilst shooting at him. The third and rarest agent is the Brute. In the Co-op Adventure, there is also a fourth variant of the agents, who are dressed in white suits and wear gas masks. They carry a pistol, but will more often than not just try to strangle the player, requiring the co-op partner to shoot them.

Uncharted 3: Drake's Deceptionedit

 * Chapter 3 - Second-Story Work (flashback)
 * Chapter 4 - Run to Ground
 * Chapter 5 - London Underground
 * Chapter 6 - The Chateau
 * Chapter 7 - Stay in the Light
 * Chapter 8 - The Citadel
 * Chapter 9 - The Middle Way
 * Chapter 10 - Historical Research
 * Chapter 11 - As Above, So Below
 * Chapter 16 - One Shot at This
 * Chapter 17 - Stowaway
 * Chapter 19 - The Settlement
 * Chapter 20 - Caravan
 * Chapter 21 - The Atlantis of the Sands (A hallucination made it appear that they were possessed by the Djinn.)
 * Chapter 22 - The Dreamers of the Day