Nightmare the Ghost Horse is a character created by Harvey Comics. She is Casper's ghost horse that first appeared in Casper the Friendly Ghost #19, he is friends with Casper and Spooky.


Nightmare is a white ghost horse with pale blue fur.

Role Edit

Nightmare became a recurrent character in the Casper comics, even gaining his own title, and he made several appearances across media, Appearing several times in The New Casper Cartoon Show, and one appearance in The Spooktacular New Adventures of Casper.