Other characters of Xanth

Beauregard the Demon
A highly intelligent demon of Xanth who is writing a doctoral thesis on the supremecy of demons over other lifeforms entitled "Fallibilities of Other Intelligent Life in Xanth". Once owed a debt to the Good Magician Humfrey after seeking information from the Good Magician on other lifeforms. He served time in a small vial for Humfrey, answering questions for people. Eventually, he escaped.

The Brain Coral
A form of coral kept in stasis in preservative fluids in the land of Xanth. Its goal is to prevent the awakening of the Demon X(A/N)th. It failed. Many people are held, or have been held, in its preservative fluids for eventual release including (Neo-)Sorceress Vadne, Magician Murphy, and Harold Harpy. The Brain Coral was a main character in the book The Source of Magic.

Chlorine
The wife of the demon X(A/N)th and mother of Nimbus. She lives in the Nameless Castle.

Demon X(A/N)th
The demon whose extended presence created Xanth's magic. He is constantly at battle with Earth, Jupiter, Neptune, and other demons who represent the planets in an astral game of gaining recognition. Earth is currently the most recognized one with Xanth coming dead last because nobody seems to believe in it. X(A/N)th is the star of the 20th Xanth book, Yon Ill Wind, and the 23rd, Xone of Contention. He currently enjoys living in the floating castle with his consort Clorine and son Nimbus. He has also been known to travel in the form of a horrendously ugly donkey-headed dragon called Nimby.

Jenny Elf and Sammy Cat
This character is named after a fan of the Xanth series who corresponded with Piers Anthony after a severe car accident. The character is based on the elves of the ElfQuest series by Wendy and Richard Pini. Her constant companion is her cat Sammy who can find anything but home. Her friends are Che Centaur and Gwendolyn Goblin. She is introduced in Isle of View.

Sim
Son and heir to Simurgh.

Simurgh
The wisest of birds and keeper of the seeds of the tree of life. Her click is Sim.