Ghoulia

She is a zombie, younger sister of Moanica Yelps, and the smartest student at Monster High. Ghoulia used to be a wallflower until Cleo de Nile took her under her wing and helped her get out of her shell. The two have been the closest of friends ever since, Ghoulia being one of the few to enjoy Cleo's complete trust. Other than Cleo, Ghoulia favours the company of other zombies, with Sloman "Slo Mo" Mortavitch and Don Ofdadead being her main zombie friends. When she's not studying, inventing, or experimenting, Ghoulia is most likely to be found enraptured by a comic book or writing and drawing her own. She is in particular a fan of Dead Fast and regularly cosplays as her OC, Ms. Dead Fast, who is also the basis of her online video game user name: MHMissDeadFast. As an expert on comic book culture, Ghoulia also writes for the Gory Gazette and is the paper's default Nekrocon reporter.

Ghoulia is depicted as intelligent, sophisticated, timid, overworked, and shy. She's a huge bookworm and is very intellectual; all of her fellow students call her the smartest ghoul at Monster High. It is revealed in her diary that she is good friends with Cleo de Nile, because Cleo was willing to give her a chance, as zombies are typically discriminated against. Ghoulia can be very unhappy with Cleo often though because of her intelligence. Examples are in webisodes "Copy Canine" and when Cleo tells Clawdeen to copy from Ghoulia, or when Cleo steals her science project in "Mad Science Fair".

She also is a comic book enthusiast: according to the "Fearbook", she is a member of the comics club, and in the webisode "Daydream of the Dead" it is shown that she is a major fan of the comic book hero Dead Fast.

She is also stressed out at times such as when Frankie said hi to Deuce which Cleo claimed as cheating on her. Ghoulia gets so stressed out that she slaps her forehead in "New Ghoul @ School" and sighs in stress when her glasses break after Cleo's banshee scream breaks them in "Neferamore".

She is sometimes frustrated by the limitations of her slow movement, such as when she is trapped by the rain Ghoulia Yelps's 'Basic' diary, July 15th or when she's too slow to get to the Maul on time.[[Ghoulia Yelps's 'Basic' diary, August 15th|Ghoulia Yelps's 'Basic' diary, August 15th]]

Despite these limitations, Ghoulia sometimes displays pretty good dexterity for a zombie such as when she creates elaborate designs out of string in "New Ghoul @ School". She also is one of the most able members of the dodgeball team. Spiking Trends in Student New Year Resolutions Ghoulia has a swayback posture, long light blue hair with dark blue streaks and pale grey skin. She wears a green headband. She also has light blue eyes that match her hair. Sometimes, she would have her hair tied up in a high ponytail with a red or green scrunchie. Her appearance is very studious and she wears deep pink zippier-like earrings, a silver chain necklace with a zippier-tag pendant, cat-eye, horn-rimmed "nerd" glasses. (Her glasses are "horn-rimmed" in the literal sense because she is a monster, so they are shaped like actual horns). She almost always wears red lipstick. Because of her zombie heritage, she has trouble with facial expressions and tends to slouch and stand in awkward positions. Her eyelids also blink one at a time, rather than at the same time. Her outfit consists of an off-shoulder, white black-and-red striped shirt that stops halfway below the elbows with a white cherry-printed tank top with red straps over it and a Monster High logo in the center, fishnet gloves that start from the elbows and end at the palms, red black polka-dotted capris with black straps around the thighs and a piano belt around the waist with the same logo on the belt buckle and black knee-high, high-heeled Converse sneaker boots with red laces and heels and the same logo on the side of the heels.

Because of her physical limitations, she can only speak in "Zombie" (moaning and groaning), but all of her friends (except Abbey Bominable until "Escape from Skull Shores") have learned the language so that they can converse with her.