Radan

Radan is a Nezumi lieutenant of the Vampire King Hastings. Being a rat-person, he is more useful for his espionage skills than as a combatant. However, this lack of combat mastery also leads him to be killed fairly often, so there is often a new Nezumi filling the role. Daimyo Korin often acts as a mentor to the new Lieutenant, bringing him up to speed on important issues like "don't try to fight Karv".
Some bullet-point notes from AFMitS that I need to turn into a proper article:
* He has access to a "mystic travel enchantment" that allows him to jump fifty to sixty yards at a time, as long as he does not touch dirt.
* He fights with twin sickles.
* He has enough of a relationship with Daimyo Korin that the Daimyo warned him about Karv. At least, the Radan seen in KarvStory did. Korin is later referred to as his quasi-mentor. Put that in the relationships field of the infobox.
* Radan has an "arcane monocle" that allows him to see the auras of magic items and spirit shackle powers. He also has multiple powers of invisibility (spirit shackles?). He can teleport short distances (about six feet), reappearing in "a sickly purple glow".
* Radan has the "Sightless Hierophant spirit shackle", which allows him to "cloak his body in the essence of the Void" (capitalisation Demonac's - plane of shadow?). It makes him and anything he's holding completely invisible and inaudible. However, it does not last for long, making it something of an emergency escape power.
* He also has a golden crystal that he can use to communicate with Hastings by slicing his finger open, causing his blood to evaporate. Sending? Oh, and he calls Hastings "Master". Compare and contrast "Lord Swayne" and "Lord Cornello".
* He can climb on the ceiling of the Shadowfel, even though it was established in TDDC proper than Angel can't spiderclimb on it.
* He has sufficient magic to conjure a fake (doesn't seem to be an illusion in the traditional D&D sense) of his own corpse. Spirit shackle or sorcery?