Beauregard is a demon from Xanth. He was first introduced in A Spell for Chameleon.
Beauregard is a friend of Humfrey who uses him on occasion to help answer questions. He is highly educated and writing his doctoral thesis: "Fallibilities of Other Intelligent Life in Xanth". He is moderately demonic-looking but his horns are vestigial and his tail is tufted not barbed.
Novels: A Spell for Chameleon, The Source of Magic, Centaur Aisle, Ogre, Ogre, Question Quest, Air Apparent
Human men and women will not have a species in their entries. Also, if the surname of the character is the character's species, it was dropped.
If the character is a child, it will be in the description. The child will more than likely be an adult by this time in the Xanth series.
Many species are single gender, so their entries will not mention it. The species are Fury, Muse, basilisk, cenmaid, cenmare, cockatrice, dryad, maenad, sand witch, sandman, and woodwife. Harpies and nymphs are usually female, and fauns are usually male; but there have been a few exceptions that are noted.
In some instances, I have made educated guesses on gender, species, and some birth years.