In Metal Gear Solid: The Phantom Pain each buddy is acquired through different means and brings a different set of skills to the table. This guide will cover how to get each buddy and will go over the abilities and uses that makes them unique.
D-Horse is your first buddy and is available from the beginning of the game. This buddy makes it possible to cover large distances at speed so is very useful until you get some vehicles. She adds some exiting features to the Phantom Pain’s gameplay including the ability to hide from enemies by hanging from one side of her saddle, the added pace of gunfights on horseback, and the power to make enemy vehicles skid by pooping on the road in from of them (try it it’s awesome).
D-Dog can be found at the beginning of missions 3, 4 and 5. He’ll be at the deploy spot, which is shared by these 3 missions. Put him to sleep and Fulton him and then carry on as normal. And that’s it; return to base a few times between mission and soon he’ll be available as a buddy. D-Dog can scout ahead and mark enemies for you, or go on the attack to get you out of a tight spot. He can be equipped with a knife for killing or a stun knife which acts like a taser, knocking enemies out.
Quiet is the sniper you have to fight in mission 11. There are a few non-lethal ways to take her out and the easiest seems to be to mark her and then drop a couple of supply crates on her. Remember, after each supply crate hits she will turn invisible and run to a new location. Follow the trail of dust she kicks up and listen out for humming through your binoculars. After you’ve beaten her Kaz will tell you to shoot her. Don’t. Wait a little while and Big Boss will take her back to mother base.
Complete a couple of missions and you’ll get a new Side OP: Visit Quiet. Complete this and leave the area and you’ll see a cut scene featuring Quiet. She’s now available as a buddy.
Quiet can be used in the field with the iDroid Buddy deployment menu. She can scout a location from a distance or pick people off with a variety of lethal and non-lethal weapons. However, she does lower Mother Base morale and she has a weakness to water so be careful when deploying her in rain. Finally, you do risk loosing quiet at mission 45. Equip the butterfly emblem around mission 44 to avoid this.
You’ll get D-Walker after completing mission 12 and extracting Dr. Emmerich. D-Walker could be considered more of a vehicle than a buddy. He can’t operate independently of Big Boss and there is no bond to strengthen. What makes D-Walker a great buddy is how versatile he is. By adding and removing parts you can make him a walking tank or an extension of Big Boss’s own stealth abilities. He has an arm which can fight and throw enemies and also use lethal and non-lethal handguns. His armour can be customised for strength or stealth. He can glide silently around the map on wheels at good speed and, of course, he can carry heavy weapons like rocket launchers and flame throwers.