Meldar667, later known as Esmu, NullCoding, Goat Failure, and now as 644, is a veteran RuneScape player who is famous for his contributions to the official RuneScape Forums and for being a dual-mod (those with both player- and forum-moderator status simultaneously) at a time when there were fewer than twenty such players. It is also true that he was a forum moderator from June to August 2008 while also being a freeplayer, in the time when the forums were only open to paying members.