Ramander
From Ardrana
In charge of all the portals of Sigil -- save those in faction headquarters - is the Master of Portals, a semi-official position belonging to Ramander the wise, a powerFul wizard. In fact, his job is pure extortion; he maintains a network of hundreds of planars who scour the city searching for new portals (each is paid a handsome bonus on finding one). Then, the Master of Portals seeks to strike a bargain: If he's paid a lump sum immediately by the owner of the portal site, the Master allows the portal's owner to retain the site, subject to a small monthly fee. Otherwise, the Master simply casts a spell which seals the portal. Most canny cuttels take the Master’s bargain, for even those who refuse and lose the use of the portal often wind up in the dead-book, their land wrested from their grieving widows' wringing hands by the Master's agents. The chant is, the Master owns dozens of portals that he keeps dark, for later use when other portals elsewhere disappear. This helps him keep his stranglehold, and helps keep tolls up to the most useful (and thus most important) portals.
Note: Ramander the Wise originally appeared in In the Cage: A Guide to Sigil. Their use here is for the purposes of providing context for the campaign only.