|Loturik the Bound|
Loturik the Bound is one of the Inevitables, order-aligned extraplanar constructs originating from Mechanus (and thusly making them spiritual kin to the Modrons). Specifically, Loturik is a Kolyarut, a type of Inevitable that hunts oathbreakers. They are known to be the most personable of the Inevitables because they will actually deign to speak to their chosen prey, and may even attempt to negotiate a settlement (so, rather than killing the oathbreaker, they may simply convince the person to uphold the broken bargain).
In this case, Loturik the Bound is occasionally seen around Sigil, and is identified as a member of the Planar Trade Consortium. Scholars can think of no reason why a Kolyarut would willingly serve any authority less than its duty, but rumors suggest that Loturik, as his moniker suggests, is bound to the will of the Planar Trade Consortium.
Rumors suggest that no less authority than Estevan himself (an oni mage and a key leader of the Consortium) tricked this rogue Kolyarut into forging an oath with the wily magus. If this is true, Loturik is bound to serve because it cannot break its own oath without defying its base nature.
Loturik is currently thought to be gathering adventuring parties to help cultivate the town called Skyfall in a grim and distant Prime Material World known as Carcosa. Special attention is to be paid to the ruins below the town, as there is apparently wealth to be had down there.
(Also, the above image was found on http://www.themistway.com/Ravenloft-Session14-DMC.html at the phrase, "human-shaped clockwork automaton.")