Elves

Elves are a mythical species mentioned in The Menagerie series.

Description
While they have not been thoroughly described, it can be assumed that elves are sentient, humanoid Mostly Human creatures with pointed ears.

Krakens and Lies
While talking about will-o'-the-wisps, Zoe Kahn mentions that elves are not associated with them, even though they are also known as elf-fire.

Trivia

 * Elves are one of the few mythical creatures not described in Camp Underpaw's Guide to Mythical Creatures, along with barangs, bunyips, enormous talking cockroaches, monster spiders, tooth faeries, vampires, werecreatures (besides werewolves), and will-o'-the-wisps.