"There are many rumors about this NPC. You can read more about it on Libraries Kazordoon. It is impossible to directly reach the Basilisk because so far there is no known way to get to his room. Some people say it is unknown Quest of the Thunder Hammer, while others say it is part of Quest's Great Axe. This may be a lie since both items are loot from bosses. See also other unreachable places." - This what i have found on one of the supported fansites
