Spoilers for those who haven't finished Metal Gear Solid V, but a recent patch has made a buddy available again.
One of the later missions in Metal Gear involves you fighting along side Quiet, the awesome sniper that is the most helpful buddy you can have. At the end, she leaves, reasons as to why I will leave out. You can keep playing the game, but you won't have the ability to choose her to go on missions later on.
That is, until yesterday. Konami has issued a patch where if you do mission 7 eleven times, you can then reunite with Quiet and continue using her a buddy.Thank god as I was not digging running around with D-Horse or D-Dog, even though D-Dog is kinda cool. Quiet just makes missions so much easier and fun to play.
Thanks Konami for letting us continue to use one of the best buddies in the game even after her story is complete.