Bethesda highlighted the Purveyor, the first organic NPC that isn't outright hostile in Fallout 76, effectively going against the original "no NPCs allowed" idea. Purveyor will be a high-end vendor since she only deals in legendary weapons.
Purveyor will pop up in Fallout 76 on 16 May 2019, despite being originally slated for release a week later, on 23rd. She is one of the Mole Miners that the Vault Dwellers previously encountered but she is not hostile, unlike the rest of them.
Players who are looking to beef up their arsenal with a bunch of legendary weapons should look no further as the Purveyor will only buy legendaries and only take legendary scrip as currency. Exchange Machines that appeared at train stations in the latest patch should serve as a decent source of this currency but the players will need to break down their legendaries in order to get it.
The abandoned train station at Berkeley Springs will be the location of this legendary vendor and she will sell different quality legendary weapons and armour at various prices.
There will be a pile of RNG involved, so players might find this frustrating as the only indications they get for purchasing an item is the number of legendary attributes represented by the number of the stars next to the item's name and whether it's a random armour piece, melee or ranged weapon.
This will be the first NPC that players can interact with and is not a robot, finally putting somewhat of a stop to the horrendous idea Bethesda had when they announced Fallout 76 wouldn't have any NPCs to interact with.
On the other hand, it doesn't look like players will have any conversation options, given that Mole Miners don't really communicate the way we do. One hint towards the lack of interactions is the Purveyor's supposed name, which is Murmrgh.
It still does not excuse the lazy work of completely foregoing a proper storyline and other RPG elements in favour of MMO-like checklists and fetch quests.
You can check out the official blog post for more in-depth description of Purveyor and her goods.