To better cover the various aspects of the subject matter, this article has been split into one main page and several subpages. Select which one you wish to read.

 Main - Cartoon 

Nightmare is a three-year-old, demonic horse and the near-inseparable pet of Headless Headmistress Bloodgood. Her vocals are provided by Audu Paden.



She is prone to bouts of panic and fear at even the suggestion of something bad about to happen. She usually breathes fire.


Nightmare is a bright blue horse with a blue-and-purple-pink mane, red-and-white-pink eyes that are red sclera (or "whites of the eyes") but they are not white, and are red, white-pink or pink-white irises, and blood-red, black-red pupils instead of fully black pupils; blue hooves, a blue tail with pinkish purple colors on it, a dark navy blue bridle over her head and muzzle with Skullettes on it, and long black eyelashes. She is large in size despite being only three years old.



She is close with Bloodgood.


She is the only pet to a romantic interest because like all the student at school she fell on the charm of Archer.


Nightmare's pet is Headless Headmistress Bloodgood.



  • Nightmare's name, obviously, is a play on the fact that a nightmare is something unpleasant and that a mare is an adult, female horse. But "adult, female horse" is not actually what "mare" in the word "nightmare" refers to. In Germanic folklore, a mare or nightmare is a demonic spirit thought to sit on people when they are asleep and cause them a bad rest, which can manifest itself as a bad dream or even sleep paralysis. It is a coincidence that this creature is called a mare and a female horse is called a mare too, as the two words have different etymological histories.
  • In "Fright On!", it is released that she is 3 years old.


Community content is available under CC-BY-SA unless otherwise noted.