Captain of the Dark Cloud, a Skullstone Deathknight
Obsidian Dragon is a high ranking captain from the Skullstone Archipelago and commands his ship, the Dark Cloud. He came to the Wavecrest Archipelago in search of Ebony and Ivory, two of his fellow Deathknights who had disappeared there.
He eventually found them in the midst of the battle at Heartwind Isle, where he collected them. He prevented Azizah from meeting with them though.