Lonesome Gavlan

Lonesome Gavlan is the last of the truly sane Gyrm, making him the last of his kind. He is located in No-Man's Wharf, Lower Eathern Peak, and the caves below Blightstone Cave Tseldora. A Gyrm sat usually next to a chest, drinking an ale of sorts, he seems to be non-hostile to the player, even though his race has a great vendetta with the humans of Majula.

Buying
Gavlan is a merchant, as such, he sells you items, mainly items that afflict poison on impact or that cure poison.

Selling
Gavlan is one of the only NPC's that you can sell to. With the exception of a handful of items, you can sell him any item that you view as junk.

Combat
Much like any character in the Souls games, the player can fight and/or kill Gavlan, in which case he drops a Gyrm greataxe if you defeat him.