There are twelve machines.
- Com Fuse is from Ptero.
- Com Ma is from Ptero.
- Com Mute is from Ptero.
- Com Panion is from Xanth then Mount Pinafore in Counter-Xanth.
- Com Passion is from Xanth.
- Com Pewter is from Xanth.
- Com Ponent is from Xanth.
- Com Pound is from Mount Pinatuba in Xanth.
- Com Pulsion is from Ptero.
- Com Rad is from Ptero.
- Nan Oʼ Assembler is from Xanth.
- Rockie is from Xanth.
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.