MacDuncan is a noble clan that is always true and loyal. The clan stands strong, and other clans are jealous of their strong, stealthy minds and bodies. The MacDuncans were the first ones to become part of the Sacred Watch.
It is interesting to note that most of the MacDuncan Clan have names after the characters in Shakespeare's Macbeth.
In the Wolves of the Beyond series, it is revealed that they were the first pack form which all other packs descended from. They were known as the 'Clan of Clans'.