Describe the character "Black dog" in chapter 2.

Black Dog

A companion of Billy Bones, his arrival at the Admiral Benbow inn marks the beginning of violence at the inn and the notification to Bones that other pirates know of his whereabouts. Although he and Billy Bones are friendly, their meeting ends in a fight where Billy Bones is injured. Black Dog is the pale pirate, missing two fingers, who confronts Billy Bones at the Admiral Benbow Inn.Black Dog is bad news. Even his name represents the dastardly side of piracy. He befriends Jim as long as Jim does his bidding.