Rimuru Tempest

Former human, reincarnated as a slime

Founder of Tempest

Demon Lord (later evolution)

Absorbs skills, evolves constantly

Kind but extremely dangerous when serious

🏰 TEMPEST NATION (MONSTER ALLIANCE)

🐺 Goblins & Direwolves

Rigurd – Goblin village chief

Rigur – his son, warrior captain

Ranga – storm wolf (Rimuru’s loyal shadow beast)

🧪 Research & Administration

Shuna – ogre princess, magic & crafting

Benimaru – red ogre commander (fire general)

Shion – purple ogre, bodyguard (brutally strong)

Souei – stealth/information specialist

Hakurou – swordsman master

🧠 Intelligence / Support

Gobta – weak but lucky goblin warrior

Geld – orc king (defense commander)

Diablo – demon butler (later extremely powerful)

👑 HUMAN KINGDOMS

🏛️ Falmuth Kingdom

King Edmaris (corrupt ruler)

High officials who invade Tempest early arc

🏰 Blumund Kingdom

Friendly nation

King Gazel allies with Rimuru

⚔️ Kingdom of Ingrassia

King Youm

Mjurran (spy/witch, later ally)

⚔️ MILIM & DEMON LORDS

💗 Milim Nava

One of the strongest Demon Lords

Childlike personality, chaotic power

🧠 Guy Crimson

Original Demon Lord, calm and terrifying strategist

🌙 Luminous Valentine

Vampire Demon Lord, rules Holy Empire internally

🐲 Frey / Carrion / Clayman (older arcs)

Bird Demon Lord / Beast Demon Lord / Puppet master villain

😈 MAJOR DEMONS

🔥 Diablo

Ultimate demon servant of Rimuru

Extremely intelligent and loyal

Other Primordial Demons

Testarossa

Ultima

Carrera

⛪ HOLY EMPIRE RUBLEIOS

Hinata Sakaguchi (top holy knight, Rimuru rival early)

Seven Luminaries (secret religious leaders)

Church knights and paladins

🐉 DRAGONS

🟣 Veldora Tempest

Storm Dragon

First companion inside Rimuru

🟡 Velzard / 🔴 Velgrynd / ⚫ others

True Dragon siblings (god-tier beings)

🧍 HUMAN ALLIES / RECURRING

Shizu (important early human link to Rimuru)

Kaijin (dwarf blacksmith)

King Gazel Dwargo (dwarf king, ally)

Yuki Kagurazaka (major wildcard human)

💀 UNDERWORLD / CHAOS GROUPS

Demon Lords faction

Eastern Empire (later war arc enemies)

Chaos Dragons / awakened beings

Hakurou

🧓 Who he is

Elderly but extremely skilled swordsman

Former master-level warrior

One of the first strong mentors in Tempest

⚔️ Personality

Calm, strict, and disciplined

Quietly confident (never shows off)

Very old-school samurai mindset

Doesn’t waste movement or words

Deep respect for true skill, not status