The Master
From Ardrana
The Master, whatever his real name may be, is (or was, or may have been) something called a "Time Lord". He was involved in the retrieval of Black Razor from Inzilagor. Disguised as a fighter named Turamarth, he insinuated his way into the party, which was accompanied by a man who called himself "The Doctor", who is some sort of rival of The Master. Thinking he was foiling the plot of his nemesis, The Master stole Black Razor, killing several guards, but was thwarted by the powerful magic of the artifact itself, which transported itself back to Ardrana from his transportation device.
The Master/Turamarth was a PC played by Tracey Stewart.
Note: The Master originally appeared in the original Doctor Who TV show. All references are meant only as context for the fictional gaming world of Ardrana.