The information from this article is from the fan game King's Quest II: Romancing the Stones or fan fiction and is therefore not canon.
Murray was once a Skeleton in the forces the dread pirate LeChuck in the Tri-Island Area of the Caribbean. He lost his head during a battle with Guybrush Threepwood. He has villain complex and wants to rule the world. After serving as a kind of sidekick to Guybrush Threepwood he has been acquired by Hagatha to guard her gate, according to unofficial KQ2 (AGDI).
Behind the scenesEdit
Murray is of course a cameo/in-joke reference of the classic Monkey Island adventure games. Murray only appears in the earlier versions of the game, he was removed from the Enhanced version 3.0.