Mysterious people, with a mysterious destiny.
Dark Souls 3: Yoel and Yuria of Londor
Yoel of Londor is a pilgrim and a basic sorcery vendor who plays an important role in unlocking the third ending. To recruit Yoel, you must visit him near the Foot of the High Wall bonfire as soon as possible; if left alone, he will die.
Yoel of Londor will offer to "draw out" the player's "true strength" - which awards one attribute point at no extra cost. Accepting this service marks the player with the Dark Sigil, which afflicts the player with Hollowing on each death. Yoel offers this service up to five times as the player become more hollow; reach 20 Hollowing to unlock all five free levels. When you have all five Dark Sigils you'll receive five levels of Hollowing each time you die.
Yoel dies either when the player defeats an as yet undetermined number of bosses or after the player secures five Dark Sigils. There are no known negative consequences to this as long as you have already obtained all five Dark Sigils.
If the player has obtained all five Dark Sigils when Yoel dies and has not cured them (see the Fire Keeper entry below), Yoel is replaced by Yuria. Yuria maintains Yoel's inventory and has several unique items of her own, including a Divine Tome of Carim and the Dark Hand weapon. Speaking to her when she first appears rewards you with the Dignified Bow emote. Further dialogue with Yuria includes hints as to how to achieve the third ending.
If you heal the Dark Sigil at any point, Yuria will leave, and the third ending will be closed off. If the player instead maintains a good relationship with her, she can be summoned to aid in the final boss fight - and the third ending will remain open. See the Dark Souls 3 endings guide for more information.
Yuria has a negative opinion of Orbeck of Vinheim. If Orbeck dies (see his entry below), the player can bring his ashes to Yuria to receive the Morion Blade.