Horace the Hushed is a mute of a knight. Hailing from an unknown land, he travels with his companion and dear friend, Anri. When first met in game, he only grunts as he gives the Player the Blue Sentinel covenant, perhaps sensing something within the Player and gifting them the ability to protect Anri when he is no longer capable of doing so (That was a fanon theory, by the way.) 

During the events of the game, the worst comes to pass, and he hollows out, going insane upon being separated from his traveling companion. In the event of the fanfiction, he simply joins Anri in gazing in wonderment at a Fading Soul, still clinging to life after years of isolation.

Horace the Hushed, per his namesake, doesn't speak. He simply communicates in grunts and groans. Perhaps he is truly mute, or perhaps he just doesn't wish to speak. The horrors of the land taking it's toll on his mind. Do as many takes as you like for this role.