User blog comment:Ambrose4803/Gorkil the Goblin King in The Desolation of Smaug/@comment-5895009-20121221122604

Or it could mean that the Goblins from the misty mountains start to track Thorin's company too and Gorkil is The Great Goblins actualy successor and new leader of the pack. He could lead a Goblin army to the battle of five armies and join Bolg and his serarate army of goblins. They will probably be wanting to avenge the death of the Great Goblin.