Fae[]
A fae is a collective term, almost like foreigner or barbarian.[1]
Genius loci[]
A Genius loci is the spirit of a certain place, and are usually very powerful.[2] Man made constructions, such as buildings, can aquire a Genius loci.[3]
River Spirit[]
A River Spirit is the Genius loci of a river.[2]
Canal Spirit[]
These differ from River Spirits according to Tyburn and Fleet.[4]
Leshy[]
AKA He of the Forest. Genius loci of a forest.[5]
Ghost[]
A ghost is the spirit of a deceased, who become attached to the vestigium of a certain area and can live off vestigia or magic.[2]
Revenant[]
An avenging spirit or ghost who returns from the dead for revenge. A “ghost vampire” who lives off the magical force of others.[2]
Troll[]
Trolls usually want to live on riverbanks, preferably on places overshadowed by stone or brick.[1] For instance Nathaniel, a troll who acts as a police informant, lives under the arches of Richmond Bridge, having moved there from Hungerford Bridge.[2]
Vampire[]
They are anti-life, or Tactus disvitae. Vampires feed off the magic potential, including the vestigia, of their surroundings and of living creatures.[2]
Jazz vampire[]
As other vampires, jazz vampires live off energy. In this case the energy comes from jazz musicians.[6]
Unicorn[]
Unicorns resemble horses, but have a long horn in their forehead.[7]
Wood nymph[]
In the park surrounding Skygarden Tower lived a wood nymph called Sky. She died when the trees in the park were cut down.[8]
Possibly magical entities[]
Bee[]
Mellissa Oswald has some kind of connection with the bees she is keeping. The bees also avoided the places where the Queen of the fae used to be seen.[7]
Fox[]
Several encounters with foxes or foxlike creatures hint that foxes somehow are connected with the demi-monde.
Mermaid[]
When Peter Grant first encountered a Genius loci, he asked Nightingale if it was a mermaid. His response: "That wasn't a mermaid", made Peter say: "So there are such things as mermaids". To this Nightingale only answered: "Focus, Peter, one thing at a time".[2]
Werewolf[]
Beverley Brook had heard rumours that Swedish forests once was the home of werewolves.[7]
Hugh Oswald said that the British practitioners, who survived Ettersberg, were followed by werewolve when fleeing the place. He didn’t know if it was actual werewolves or special forces.[7]