Milim Nava, a Dragonoid and one of the oldest Demon Lords, bears the epithets "Destroyer" or "Destruction" reflecting her immense power. She is the daughter of Star King Dragon Veldanava and Lucia, sister to the first emperor of the Eastern Empire, inheriting most of her father's abilities. Born over 2,000 years ago, she lived peacefully with her pet dragon Gaia until her parents' deaths. The kingdom of Soma's plot led to Gaia's killing, causing Milim to lose control and destroy an ancient magic kingdom. This rampage nearly destroyed the world and awakened her as a True Demon Lord after absorbing countless souls. Guy Crimson and Ramiris intervened; Guy fought her for seven days and seven nights before calming her. She presents as a youthful girl with bright blue eyes and long pink hair typically in twin tails, standing approximately 135 cm tall. Her outfit shifted from gothic lolita to a more revealing punk style, later modified with a mini-skirt and longer top for reduced exposure. In her Stampede form, her skin darkens, hair grows wild, and draconic features emerge: fiery red-and-black armor, wings, claws, and a tail. Energetic and playful, Milim exhibits childlike impulsiveness, often skipping logic for immediate action. She dislikes boredom, seeking novelty through food, fashion, or adventures. Despite her chaotic demeanor, she is observant, intelligent, and deeply values friendships, avoiding unnecessary harm. She actively restrains her power to protect others and shows fierce loyalty to allies, particularly Rimuru Tempest. Centuries of temple offerings bred her hatred for raw vegetables—especially green peppers and carrots—while she loves honey and sweets. As a Dragonoid, Milim possesses innate draconic traits: wings for flight, shapeshifting between human and dragonoid forms, and Dragon Spirit Haki—an aura shredding objects on contact. Her abilities include Unique Skills "Dragon Eye" (analyzing magic, strength, and hidden attributes) and "Dragon Ear" (enhanced hearing), alongside her Ultimate Skill "Wrath King Satanael," granting infinite magic energy and multiplying her strength infinitely. She manipulates physics, elements, and space-time, erects multi-layer barriers, and resists lower-tier abilities like mind control or existence erasure. Signature attacks include Dragon Star Burst (city-destroying beams) and Dragon Star Nova (capital-annihilating energy). Releasing power limiters triggers a berserk "Hell Mode" or "Stampede," risking global destruction; Rimuru crafted Dragon Knuckles to help regulate this state. Milim governs the Forgotten Dragon City at the continent's eastern edge, where locals worship her as a deity for protection from monsters. She delegates administration to priests like Middray and Hermes. Her friendship with Rimuru began when she considered subjugating him but was placated by honey and food offerings, forging a close bond. During Clayman's schemes, she feigned mind control to gather intelligence before betraying him. Former Demon Lords Frey and Carrion (Karion) later became her aides. She is the niece of Veldora Tempest and maintains ties with ancient beings like Guy Crimson and Ramiris, who calmed her past rampage. Milim assisted in building Rimuru's labyrinth and rejoiced when he facilitated Gaia's soul revival. Recently, she frequently visits Rimuru's nation, contributing to battles, dungeon management, and daily antics—often accidentally causing property damage. Cross-media appearances show her retaining her cheerful, chaotic nature while controlling her power in other worlds.