Nightmare Princess appears throughout the episode "Orb" as simply a cloud with a single eye. Once she is fully constructed, this cloud is shown to be her head. She wears a red dress with a yellow crown-like pattern on the abdomen. Her limbs are green with her right hand being a mantis claw and two bat wings that protrude from either side of her head.
- It is unknown whether this Nightmare Princess is the same one that had appeared in the video game Adventure Time: The Secret of the Nameless Kingdom. Her looks are very different; however, it should be noted that Nightmare Princess was able to change her shape in the game to a large form somewhat reminiscent of the one seen in the episode.