Archibald is a middle-aged merchant and noble lord of Waterdeep. He amassed his fortune by sacrificing his firstborn’s soul to Pazuzu, later purchasing his noble title with the wealth gained. Unexpectedly, he fathered his firstborn child a few years after making the pact. Over the next decade and a half, he spent a considerable sum attempting to break the deal with the demon prince.
In 1486 DR, his son was killed as part of the machinations of the Margaster Family and Mortimer. Driven by revenge, Archibald joined the Seekers, Nabulee el Jasafir, and Sir Victorum in their alliance against the Margasters, assisting in the final battle against them.
When the Seekers learned of his pact with Pazuzu, Connor Lycanmor issued an ultimatum: Archibald would leave the city with his fortune, and in return, the party would save his son’s soul. Archibald reluctantly accepted and is now apparently preparing to move to Mithral Hall.