Cleo de Nile/cartoon

Cleo de Nile debuted in the cartoon series in the Volume 1 webisode "Jaundice Brothers", which premiered on May 5, 2010. She is voiced by Salli Saffioti in the English version of the cartoon.

Webisodes
When Radio KBLOOD announces a contest of which the prize is that the Jaundice Brothers come play at the winner's school's homecoming dance, Cleo helps Frankie put together a tape to sent in. As luck has it, they win the contest. Cleo participates in Monster High's 1361st Annual Charity Talon Show. One of her competitors is Clawdeen, who takes the stage just after her. Cleo attempts to sabotage Clawdeen's performance by turning on the spotlight, which works as a substitute full moon on her. She loses control, but rather than it being disastrous, she improvises her way through a killer dance that easily beats Cleo's. Cleo is hosting the fearleading try-outs and is busy explaining the high demands of the Fear Squad to the candidates when Frankie bursts in. The simulacrum's hand becomes detached, and Frankie performs several difficult moves to get it back, earning herself a spot on the Fear Squad despite Cleo's objection. Cleo's Trigular Calcometry 101 class is hosted by a substitute teacher, Lou Zarr, who does not get along with the class. A conflict with Deuce leaves him petrified, upon which Cleo and the other students consider the class dismissed. When Clawdeen shows up unprepared for the SAT that day, Cleo advises her to copy Ghoulia's answers. Cleo is annoyed that Draculaura dares suggest her crush is hotter than Deuce and tries to sabotage her chances. She advises her to touch up on her makeup first and offers to do it for her. Rather than making Draculaura prettier, however, Cleo makes her look horrendous. Amazingly, Heath digs the look, so Cleo's plan is foiled and Draculaura gets her date. Cleo has her locker door smash closed on her by Frankie's haywire charge, causing her earrings to become stuck in its vent. It's Picture Day, but Coach Igor's covering Study Howl and he's obsessed with sport. Cleo and her friends make a looks-destroying escape from a looks-destroying workout, though Igor eventually catches up to tell them they won't have run lapses because of Picture Day. When Frankie develops a zit on her cheek, Cleo makes sure to take a picture and send it to all students. Irony strikes when she herself becomes covered with zits. Cleo vies to be the leading lady of the school's production of Hamlet, but Clawdeen is her main rival. The two sabotage each other's auditions to the point they both end up in plaster while Draculaura gets to be leading lady.

An eyeball fight breaks out during Biteology and Cleo participates. She is later chased out of the girls' bathroom by a frog infestation. Following a collision with Frankie in the hallways and Cleo's subsequent struggle to get loose, which resulted in a statue being knocked over and broken, the two girls are ordered to Headless Headmistress Bloodgood's office. There, Cleo puts all the blame on Frankie. Bloodgood accepts this and then informs Frankie that breaking the statue was a good thing because one of Monster High's first teachers had been locked inside of it for millennia. Frankie readily accepts the praise, much to Cleo's regret. It is both Friday the 13th and Halloween, a rare occurrence that spells bad luck galore until three o'clock. Cleo calms her panicking friends by assuring them that her amulet will protect them. However, Ghoulia's carrying the amulet and she just walked off. The girls chase after her to be safe, only to find her use the amulet to get to the big clock and adjust the time to three o'clock. Cleo forces Ghoulia to switch science fair projects, meaning to take the credit for Ghoulia's superior work. Because Ghoulia can't stand up for herself, Cleo gets what she wants and stakes a claim on the Mad Science Fair's throne. That is, what she thinks is a throne, because in reality it's Lagoona's project: a chair with a water-dunking function. Knowing what Cleo has done, Lagoona hands the remote to Ghoulia. When Frankie's friends discover she's never seen a movie, they promptly take her to the auditorium to watch the entire TwiHard series. In preparing for the movie session, they overtax the room's electricity net. To solve this, the group hooks up the equipment to Frankie, allowing the movie session to go through but Frankie not to watch anything. Cleo mistakenly thinks that Clawdeen is also running for Scream Queen. In order to thwart her supposed rival, she spreads a rumor that Clawdeen suffers from a case of fleas and can no longer compete. The rumor gains a life of its own, however, dropping the fleas and promising a school carnival if Clawdeen wins. Clawdeen is voted Scream Queen, while Cleo seethes in silence. Draculaura has a chance to meet her perfect guy, but she has to get into contact with him before school's out. Cleo works on a Plan B to help Draculaura meet with him in time in case her other friends fail, which they do. Plan B is Deuce Gorgon, who is tricked into turning Draculaura's crush to stone. Because she deserves an A for her work, but only gets a B+, Cleo uses a mind-control idol on Mr. Rotter to get past his "No A's"-rule. But after having gotten a taste of the power of mind-control, Cleo continues using it even for gain she does not deserve. At the end of the day, the idol has her pay the price by taking away her hair. Cleo partners up with Deuce to take care of an egg for a whole week as an assignment for Mr. Hackington's class. Deuce petrifies the egg to guarantee that it won't break, promising it'll return to normal in a week. It doesn't. Cleo tries to manipulate Frankie into spilling whom she's crushing on through a game of Truth or Scare during a sleepover. Frankie chooses truth and is ordered to send a text reading "party at my house", which she does. Cleo is amused only until she realizes the text was sent on her own cellphone. To help Lagoona with an unexpected parent-teacher conference, Cleo, Clawdeen, and Frankie dress up Slo Mo as Lagoona's aunt Lantic so he can figure out what the conference is about.

TV specials
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Webisodes
As the captain of the Fear Squad, Cleo is not quickly satisfied, much to the annoyance of most of the team. Cleo is oblivious to this and thus it comes as a shock when the fearleaders desert en masse. Only Frankie stays, forcing Cleo to swiftly organize try-outs. Cleo and Ghoulia have finished promoting the Fear Squad try-outs and are on their way to the gymnasium to meet the new recruits that Cleo is certain have gathered. Bar Frankie, the gymnasium is empty. Because Cleo gives up, Frankie starts her own recruitment drive, finding new team members in Draculaura and Clawdeen. Once Cleo hears she's got a team again, she is back to her bossy self. Cleo is unhappy with the new Fear Squad's performance yet and orders them to attend every school event for the time being to gain experience. All of their cheers have disastrous consequences for the school's performance, making Cleo fear for their chances to be invited to Gloom Beach.

Special webisodes
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TV specials
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Webisodes
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Special webisodes
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TV specials
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