Cleo de Nile descends from ancient Egyptian royalty, born human over 5,800 years ago as Pharaoh Ramses de Nile and Queen Dedyet’s daughter, with an older sister and heir, Nefera. Her childhood awareness of Nefera’s future reign granted Cleo freedom but ignited fierce sibling rivalry. When her uncle staged a coup, the family hid in an underground chamber, wrapped in magic cloth meant for temporary preservation. Instead, it cursed them into prolonged slumber, transforming them into mummies. They awoke 1,300 years later to find Dedyet vanished and themselves entombed until an earthquake opened an escape, leaving Cleo with lasting trauma-induced fear of darkness. Now residing in New Salem with Ramses and Nefera within the modern monster world, her family commands vast wealth, magical artifacts, and legions of servants. At Monster High, Cleo’s royal status and assertive nature cement her as a social leader. After dating Clawd Wolf, she pursues Deuce Gorgon, enhancing her popularity. She assumes captaincy of the Fear Squad post-Nefera’s graduation, relying on the squad and friendships—notably with Ghoulia Yelps—to counter insecurities. Cleo’s personality fuses regal arrogance with concealed vulnerability. She exhibits selfishness and competitiveness, particularly toward rivals like Toralei Stripe, fueled by upbringing and familial strains: Ramses demands excellence while Nefera undermines her. Yet Cleo shows fierce loyalty and protectiveness toward friends Frankie Stein, Draculaura, and Clawdeen Wolf—though her breakup with Clawd fractures the latter bond. As a leader, she commands effectively, organizing with precision but vacillating between selfless and selfish acts. Access to minor magic via amulets sparks impulsive choices, yet she rarely learns from errors. Physically, Cleo has tan skin, pale blue eyes, and long black hair streaked with gold, teal, or purple. Her mummy nature necessitates at least one visible bandage to prevent disintegration. She favors Egyptian-inspired attire: gold accessories, gemstones, and motifs like scarabs or serpents, often merging mummy wraps with modern fashion. A sky-blue gem sits beneath her right eye, complemented by dramatic ancient Egyptian-style makeup. Her journey involves navigating high school politics while reconciling ancient heritage with contemporary life. Key trials include sustaining relationships amid rivalries, overcoming familial friction, and confronting trauma-rooted fears. Her bond with Deuce withstands conflicts, revealing her capacity for deep affection. Through these experiences, Cleo evolves from a self-centered royal to someone valuing friendship and inner fortitude over status—yet her core regal essence endures.