Rimuru

Biodata

Feature	Details
Name	Rimuru Tempest (利姆露) 7
Alias(es)	Cute King; Demon King Rimuru; “Beautiful Demon Country Princess” (pen name) 3 1111
Species/Race	Dragon Species (subspecies); formerly a Slime 3 898
Gender	Female 4 80
Affiliation	Demon Country Federation / Tempest
Occupation/Role	Co-founder and ruler of Tempest; Demon King 428 477
Status	Active 1197
First Appearance	Chapter 3

Power Progression

Stage / Realm / Level	Chapter	Notes
B+ magicule level	4	Great Sage assesses Rimuru as B+ when she first meets Mo Li; his magicule count exceeds hers.
Calamity-class monster; near Demon Lord Seed	112	Rimuru identifies herself as a Calamity-class monster only one step from becoming a Demon Lord Seed.
Awakened Demon King	335	Following the Falmes invasion and Morax’s reported death, Rimuru collects human souls for her Demon Lord ritual. Great Sage evolves into the Ultimate Skill King of Wisdom, while Gluttony becomes King of Gluttony. 331 333 335
Dragon Species — “Dragon Demon Sticky Star God Body”	897–898	After Velgrend is devoured and analyzed, Shiel evolves Rimuru into a Dragon Species. She gains Dragon Spirit Aura, severalfold greater Magic Essence, and a Calamity-class presence. 897 898 899
Second evolution	919	Analysis of Veldora within Stomach Space and the power of both the Storm and Burning Dragons complete another evolution, leaving Rimuru with Magic Essence greater than everyone present combined. 913 918 919

Background

Rimuru arrives in the cave as a Slime with no clear plan for her new life. When Mo Li approaches, she is wary but accepts Great Sage’s assessment that he has no hostility. She initially admits that she has spent her time simply running around and eating rather than considering a future path. 4 5

She and Mo Li befriend the lonely Storm Dragon Veldora. Veldora grants them the names Rimuru Tempest and Morax Tempest, increasing their magicules through his blessing; the three then formalize their bond with a Friend Equal Contract. 7

At Mo Li’s request, Rimuru swallows Shizue’s sealed coffin into Stomach Space. Analyzing Shizue allows her to assume a humanoid body almost identical to Shizue’s, distinguished by blue hair, a shorter stature, and the absence of Shizue’s mark beneath the left eye. 80

Appearance

Rimuru can freely shift between a blue Slime body and a humanoid form. Her initial humanoid body resembles Shizue, while her Dragon Species evolution gives her a more mature, sacred appearance. 80 897 898

• Slime form — Blue and compact; she can flatten herself into a puddle-like shape. 272
• Initial humanoid form — A blue-haired girl with delicate features, nearly identical to Shizue; notably flat-chested. 80
• Dragon Species form — Around 1.6 meters tall, appearing fifteen or sixteen years old, with silver-blue hair streaked white, golden dragon-like eyes, and snow-white skin. 897 898
• Dragon Species attire — Black-and-gold demonic energy condenses into a jet-black, Mythical Grade full-body outfit. 898 918

Personality

Rimuru is compassionate, approachable, and reluctant to harm others, qualities that make Tempest’s monsters respect and adore her. Mo Li repeatedly considers this mercy a weakness, warning that mercy toward enemies can become cruelty toward herself and Tempest. Rimuru ultimately recognizes that her naivety and lack of responsibility require correction. 28 430

Her protectiveness becomes absolute when Tempest or those close to her are threatened. The reported death of Morax drives her into grief and vengeance, prompting her to undertake the Demon Lord ritual; she later reacts with open fury to foreign demands to exploit Tempest. 330 331 579

Despite her authority, Rimuru is playful, easily bored during peaceful periods, prone to daydreaming, and frequently flustered around Mo Li. She openly imagines marrying him, becomes jealous of perceived rivals, and is insecure about her figure. 272 760

Abilities & Skills

Devouring and Stomach Space

Rimuru’s devouring ability allows her to contain, analyze, and assimilate targets within Stomach Space.

• Swallowed Shizue’s sealed coffin and analyzed her body to acquire a humanoid form. 80
• Temporarily contained and analyzed Veldora, a process that contributed to her second evolution. 913 918
• Devoured Velgrend, enabling Shiel to transform her body into a Dragon Species. 897 899
• Acquired Endless Devour, a dangerous black-hole-like consumption ability that can devour any existence at the cost of sacrificing King of Gluttony. 335

Great Sage, King of Wisdom, and Shiel

Great Sage serves as Rimuru’s internal analyst and adviser. It evolves into the Ultimate Skill King of Wisdom during her Demon Lord evolution, then later develops into the Divine Consciousness Core Shiel. 4 335 888

• Analyzes threats, transformations, magicules, and enemy abilities. 4 80 885
• Shiel breaks Rudra’s Archangel’s Dominion and restores Rimuru’s control of her body. 888
• Shiel possesses an independent will and strong emotional attachment to Rimuru. 885 1086
• Shiel can derive and bestow Ultimate Skills upon Rimuru’s subordinates without significant harm to herself. 1086 1089

Ultimate Skills

Rimuru is later identified as possessing four Ultimate Skills, an exceptionally rare concentration of power. 746 765

• King of Wisdom — Evolved from Great Sage during her Awakening. 335
• King of Gluttony / King of Devouring — Evolved from Gluttony; forms the basis of Rimuru’s devouring power. 335 765
• King of Vows — One of her Seven Virtues-series Ultimate Skills. 765
• King of Ultimate Clarity — Copied from Veldora. 765
• King of Storms — Includes Summon Storm Dragon, used to call Veldora in an emergency. 629
• Dragon Orb — Activates a summons for Azhdaha, the Rock Dragon King. 629

Naming and Blessings

Rimuru can name monsters, causing dramatic evolution and strengthening among recipients. Naming normally consumes an uncontrollable amount of magicules and can permanently reduce the namer’s capacity, but Rimuru relies on Veldora’s immense magicule supply and Great Sage’s support. 4 57

• Named monsters become significantly stronger regardless of their original race. 57
• Her Awakened Demon King evolution blesses monsters under her lineage, causing those she named to enter evolution. 335
• Her later power allows her to help subordinates awaken Ultimate Skills. 1085 1086

Martial Arts and Combat

Morax personally teaches Rimuru martial arts and most of his non-forbidden Immortal Arts. Great Sage’s analytical support lets her learn them rapidly, making her substantially stronger than her original counterpart. 212 434

• Her physical ability increases tenfold after becoming an Awakened Demon King, eventually surpassing Hinata Sakaguchi in direct combat. 443
• She has received World-Trấn Rock Spear and All Phenomena of the World from Mo Li, though she hesitates to use them impulsively. 736
• Mo Li provides seven defensive shields, additional protection around her brain and chest, and an emergency talisman that can summon him during an otherwise fatal crisis. 588

Equipment / Weapons / Items

• Nian Li — A long saber forged by Mo Li from rare metals and based on a Mythical Grade weapon. It further evolves through Rimuru’s demonic aura. 918
• Demon Seal Mask — Shizue’s mask, retained in Rimuru’s Stomach Space and worn during her journey to Englasia. 273 289
• Emergency talisman — A talisman made by Mo Li for use against an insurmountable fatal threat. 588

Relationships

• Mo Li / Morax / Ari — Co-founder of Tempest, teacher, protector, and Rimuru’s foremost emotional attachment. Rimuru becomes intensely infatuated with him and imagines marrying him. 212 760
• Veldora Tempest — Friend since their meeting in the cave and the source of Rimuru’s Tempest name and vast magicule support. After Rimuru becomes a Dragon Species, Veldora recognizes her as his younger sister. 7 907
• Shiel — Rimuru’s Divine Consciousness Core, born from King of Wisdom. Rimuru treats Shiel as a companion and prioritizes her safety over further power. 885 1086
• Milim Nava — Rimuru’s self-proclaimed best friend. They share affection and frequent quarrels, particularly over Milim’s behavior and attention toward Ari. 273 665 672
• Azhdaha — A trusted Tempest guardian whom Rimuru entrusts with protecting the nation during her absence. 275
• Shizue Izawa — Rimuru’s former instructor and the basis for her first humanoid appearance. Rimuru safeguards Shizue’s sealed body and seeks to address her lingering regrets. 80 273
• Hinata Sakaguchi — Initial adversary who ambushes Rimuru and later faces defeat after Rimuru’s Demon Lord evolution. 323 443
• Ramiris — Fellow Demon King and friend who moves into Tempest to operate the Great Underground Labyrinth. 355 461
• Diablo — Rimuru’s second secretary and an excessively devoted subordinate whose praise often embarrasses her. 353 1085
• Benimaru — Tempest commander and loyal subordinate who worries about the toll Rimuru may suffer while granting Ultimate Skills. 224 1085

Story Role / Major Arcs

Founding Period

Rimuru begins as an uncertain Slime in the cave, befriends Veldora and Morax, and receives the Tempest name. She develops into one of Tempest’s two founders and the ruler most monsters know as their approachable leader. 5 7 428

Great Storm Ogre Crisis

When the Great Storm Ogre and its Sky Sharks threaten Tempest, Rimuru leads the defense and intervenes after her executives struggle against the Calamity-class monster. 221 224 228

Falmes Invasion and Demon Lord Awakening

Hinata’s ambush and the invasion of Tempest coincide with Morax’s reported death. Rimuru resolves to obtain the power needed for revenge, collects the required human souls, and successfully awakens as a Demon King. 323 331 333 335

Tempest’s Diplomatic Expansion

Rimuru represents Tempest in meetings with foreign leaders, accommodates Ramiris’s move to the nation, and begins constructing the Great Underground Labyrinth with her assistance. 353 461

Western Nations Council Incident

Rimuru rejects an exploitative treaty demanding Tempest’s resources, transport, equipment, and labyrinth access. When provoked further, she openly threatens war and exposes the council’s mental interference. 579

Imperial Conflict and Dragon Species Evolution

During the struggle against Rudra, Rimuru is captured through Archangel’s Dominion until Shiel evolves and breaks the control. After devouring and analyzing Velgrend, Rimuru ascends into a Calamity-class Dragon Species. 885 888 897 899

Notable Quotes

“I won't let them go. I will definitely come back and kill them! I will! I will!” 331

“What right or authority do you have to make such demands of me, a Demon King!?” 579

Trivia

• Rimuru secretly writes light novels under the pen name “Beautiful Demon Country Princess.” 1111
• Her best-known work is Reincarnated in Another World, Conquering the Geo Archon, published through her private Moe King Library in Liyue City. 1111
• Although her body can theoretically take any shape, King of Wisdom prevents her from arbitrarily altering its structure, contributing to Rimuru’s ongoing frustration over her appearance. 760