Ghoulia Yelps/books

Ghoulia Yelps debuted in the books in "Chapter 13: Slow and Tell" of the Monster High book series, which premiered on May 13, 2011.

Monster High
Cleo mentions that she isn't at the R.I.P. (RAD Intel Party) so she instead receives notes of what the party discussed from Deuce's mother, Mrs. Gorgon. She appears at one of Frankie's secret meetings, where she takes on the name "Julia Phelps". Julia is shown to be capable of simple English. She compliments Cleo on her hair at the RAD meeting right after the Ghoul Next Door video is shown, oblivious to rising tension (this is mostly due to RAD-related reasons). She also makes an appearance at Clawdeen's Sassy Sixteen, dancing with Bekka's former friends. She forms a flash-mob along with Slo Mo, to prevent her parents from moving away due to possible intolerance from the Normie community.

Ghoulfriends
Like almost everyone else at Monster High, she comes under Sylphia Flapper's mind control and is not freed until a few days later by the efforts of Venus, Rochelle, Robecca, and Cy.

Hopes and Screams
As Cleo's confidante, Ghoulia listens when she needs to air her fears Deuce is no longer interested in her. Ghoulia advises Cleo to send in a question to Draculaura's advice column in the Gory Gazette, which she does. Clawdeen finishes up another recording for her Gory Gazette vlog Fashion Screams and Yawns with the assistance of Ghoulia and Heath. Ghoulia tracks down a replacement component for Robecca's broken steamboot on Zbay. The latest issue of the Gory Gazette is almost ready to be uploaded. All that is missing yet is Ghoulia's Dead Fast review, which also makes her responsible for putting the new version of the newspaper online. Ghoulia soon loses herself in a daydream of sketches about Dead Fast and her OC Ms. Dead Fast saving the editor-in-chief from Dr. Igorable's anti-monster union schemes and subsequently finding out their true identity. But just as the two superheroes are to learn the identity of the editor-in-chief, Headless Headmistress Bloodgood awakens Ghoulia to inquire about the status of the new edition of the Gory Gazette. Ghoulia uploads it quickly while Bloodgood takes a peek at her Dead Fast sketches. She compliments Ghoulia for it and suggests that Ghoulia asks the editor-in-chief to print one. Ghoulia hazards a guess and asks if it's Bloodgood she should be asking. Bloodgood just smiles and informs her they should make their way to the party. Ghoulia understands and quickly redresses for the party, where she has a great time.