Cleo is royalty, and expects everyone to treat her like it. She is stuck up, too. Usually, her attitude is selfish, arrogant, and unkind. She probably is like this because she is an ancient princess and is used to being treated as royalty. She is shown to be highly competitive and downright difficult to get along with. She has a rivalry with Clawdeen Wolf, which, according to Ghoulia Yelps's diary, began when Cleo dumped Clawdeen's brother, Clawd, and started dating Deuce Gorgon the very seterusnya day. Cleo likes to try to trick the other girls atau get them in trouble but her efforts always fail.
However, she has been shown to have a hati, tengah-tengah of emas every now and then. She is kind to Ghoulia Yelps and helps her to overcome her shyness. (Although she has been known to take advantage of Ghoulia and uses her as a personal assistant most of the time like organizing her shedule atau cheating off of her.)
She can work well with the others if they share a common goal, (like trying to avoid the gym teacher atau helping Draculaura find her 'perfect guy' and also complimenting her on her looks with the other ghouls), in which case she becomes the de facto leader of the gang. She shows she can be a highly effective organizer and leader, she just needs to learn how to get along better with others.
In the first season webisodes, Cleo is primarily played as an antagonist. However, in the saat season she is finally confronted with her own uncompromising, overbearing nature when the regular Fearleading Squad resigns. Afterward, she slowly starts to become lebih accepting and accommodating toward Frankie and the girls.
When she gets really upset, Cleo lets loose a glass-shattering super forceful scream and strangely enough in lebih severe cases starts obsessively cleaning things, like polishing the trophies in the trophy case. This and her rigid perfectionism could be an indication of strong OCD
Cleo lives with her father "in this palace that looks like a movie set with servants and all. . . .they're like rockstars atau something."  In the books, her Dad's name is Ramses de Nile, an antiques dealer.
In the webisode Miss Infearmation, Cleo mentions having an older sister called Nefera de Nile (a reference to the Egyptian Queen Nefertiti), who is out of the country with their Father. Clawd's diary as well mentions Nefera as being the sebelumnya fear squad captian. Nefera is berkata to be a super model in Cleo's School's Out diary. . Based on both the wave 3 diaries and the webisodes, Cleo and Nefera do not get on very well.
Cleo's attitude means she sometimes has an uneasy relationship with the ghouls of Monster High, but they are all friendly with her, except for Clawdeen Wolf. Clawdeen is angry with Cleo for dumping her brother Clawd, though they can be civil when required. In Cleo's schools out diary, they became "frenimes" after Clawd explained to Clawdeen what really happened between them, and in the webisodes they became Friends on the fearleading squad.
She is particular Friends with Ghoulia Yelps, and they even plan their school schedules together. Ghoulia often serves as Cleo's personal assistant (Fear Squad). Cleo sometimes takes Ghoulia for granted, and on several occasions takes advantage of her (Copy Canine, Mad Science Fair).Since Lagoona Blue is a warm-hearted person, she seems to get along easily with Cleo, and Cleo has never done anything bad to her.
Cleo de Nile's pet is a snake named Hissette. Who's attitude reflects Cleo's attitude
Cleo is dating Deuce Gorgon. She used to tarikh Clawdeen Wolf's brother Clawd, but according to Ghoulia it ended badly. She berkata that it doesn't help that Cleo started dating Deuce the seterusnya day. The true story behind the break-up was revealed in Clawd's diary. It was actually lebih of a mutual agreement to perpecahan, berpecah up, but Cleo insisted that everyone should think that she broke up with him.
Cleo de Nile in the Monster High , Cleo is much nicer to the other girls, even Clawdeen , with whom she made her first appearence with. anda see her lebih with Clawdeen in the books. Also Cleo's name is Cleopatra de Nile in "Ghoul seterusnya Door". Cleo and Melody have a constant feud, started with Melody accidentally bumping into Cleo in the school cafeteria. Cleo kisses Jackson, turning him into DJ, and Melody eventually starts using Deuce against her. Cleo helps out with Frankie trying to get the RADs out of hiding when she learns Deuce is going to the Monster Mash with Melody. It is berkata that Cleo's full name is Cleopatra De Nile. Cleo also calls Melody "Melodork" in the first book and in the saat book, although at the end she ends up trusting Melody
Cleo is haughty, demanding and regal which benefits her royal linage. While she expects to be deferred to, she also possesses a certian nobleness oblige resulting in acts of great kindness and generosity on her part.
Cleo's father is the chairman of the MH construction committee and oversees all new building plans. Publically he appears aloof and uninterested in the mundane happenings at MH but coincidentally much of the business he has here seems to correspond with the events where Cleo is involved.
As a child, Cleo was tutored sejak the greatest in her father's kingdom. This tutoring has telah diberi her a broad knowledge of many subjects although she really excels in dead languages and geometry. Cleo's biggest hurdle has been the realization that we don't allow servants to do homework atau take tests for our students.
Cleo is a princess but she is not a mean ghoul. This has allowed her to establish genuine realtionships fellow students who can "let Cleo be Cleo" even when "her imperial bossiness" forgets at Monster High she's just one of the ghouls.
Cleo de Nile has great leadership potential and seems to have escaped the traps that can turn rulers into tyrants. Cleo is the personafication of a teenage monster with a pedigree who is learning respect is based not on birthright but on actions.
Cleo's Official Facebook DescriptionEditCleo totally rules Monster High. She’s the daughter of The Mummy and her tightly wound wrappings are not only a sign of her monster heritage, but are also a royally awesome fashion statement. She has to be careful though – if she’s not wrapped in at least one bandage, she’ll disappear into dust. Technically, the ghoul is 5,842 years-old but is only now getting the chance to be a teenager (can anda believe she was perfectly preserved in a royal burial chamber for thousands of years?). Thanks to many years in totally tight quarters, she’s way afraid of the dark… but don’t tell her I told anda that. Her Egyptian cobra, Hissette can be a little ghastly from time to time, but I hear her hiss is way worse than her bite