Latebrangels or Lair Angels are beings who exist to serve the resident of a lair, feeding on the potentia of their resident and in turn handling the internal affairs of the lair. Because it exists to serve, the latebrangel's very existence is directly related to the tasks it does for its dragon, and how useful and helpful it is. They are by their nature symbiotic parasites of their host dragons, but they provide the dragon with such useful benefits that this relatioship is always a positive one. The latebrangel may or may not develop an emotional attachment to its host dragon, and it will be fiercely loyal to its host dragon as long as the dragon holds the lair securely. In some cases, the latebrangel may even arrange for the resurrection of its previous host, especially if the host is killed while abroad. A latebrangel will, however, gladly serve a new dragon if this new dragon uses the lair regularly and supplies the latebrangel with at least as much potentia as the old resident. The apparent extreme loyalty of a latebrangel is entirely self-serving, as a latebrangel cannot survive without a host dragon.

A latebrangel is born when a dragon either finds or constructs a lair. Once the lair is in a state the dragon finds comfortable, and the dragon begins to regularly sleep there, a latebrangel gradually takes form. The latebrangel is weak at first as it grows. In its first few months, the latebrangel is entirely reliant on the dragon for protection. It is not until the latebrangel is one year old that it is solid and strong enough to use tools, but even then, only light tools which do not require much strength or precision, such as brooms or rags.

For the first few years of its life, the latebrangel's primary duties are restricted to cleaning and fetching objects for the resident dragon. Not out of a lack of will, but because the latebrangel's mind is still forming, and cleaning tasks are both necessary and simple. These tasks provide the most benefit to its host with the least risk and effort, thus ensuring the latebrangel receives a steady stream of potentia with which to grow.