Anime Characters/Rimuru Tempest

Rimuru Tempest

A slime who became a demon lord through reincarnation. The protagonist of the anime 'That Time I Got Reincarnated as a Slime' who builds a nation bridging monsters and humans.

Overview

Summary and key details about this anime character.

Rimuru Tempest is the protagonist of the anime series "That Time I Got Reincarnated as a Slime" (Tensei Shitara Slime Datta Ken). Originally a human salaryman named Satoru Mikami, he is killed by a random assailant and reincarnated in a fantasy world as a slime with unique abilities. Despite his unassuming appearance, Rimuru possesses the rare skill of "Predator," allowing him to absorb and mimic the abilities of anything he consumes, along with the formidable "Great Sage" intelligence ability that aids his strategic thinking.

What makes Rimuru memorable is his diplomatic and level-headed personality. Rather than relying solely on combat, he approaches problems with intelligence and negotiation, earning the trust of monsters and humans alike. His calm, analytical nature balances well with his genuine kindness and desire to protect those he cares about. This approachability has made him a beloved protagonist who stands out from typical power-fantasy leads.

The series follows Rimuru's journey from a solitary slime to the founding of Tempest, a nation where monsters and humans coexist peacefully. His transformation into a Demon Lord (True Demon Lord) marks a significant turning point, elevating his status in the demon hierarchy while maintaining his core values. The story explores themes of nation-building, friendship, and the challenges of bridging cultural divides between species.

For fans who enjoy Rimuru's blend of strategy, diplomacy, and fantasy adventure, similar anime protagonists include those from isekai series like "The Rising of the Shield Hero" and "Re:Zero," as well as nation-building stories like "Log Horizon" and "Overlord."

Media

Images and sources for this character.

Rimuru Tempest media 1
Rimuru Tempest media 2
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Appearance

Rimuru Tempest takes the form of a blue, translucent slime approximately the height of a human child. His body has a gelatinous, slightly viscous appearance that shimmers with a soft blue hue, giving him an otherworldly yet approachable look. Despite lacking traditional facial features, he can create eyes and a mouth when needed to express emotions and communicate more effectively with others.

As a slime, Rimuru's form is highly malleable and can change shape to suit different situations. He often maintains a roughly humanoid silhouette but can flatten, stretch, or compress his body as needed. After consuming certain beings, he can temporarily adopt their appearance or incorporate their features into his own design.

  • Translucent blue gelatinous body with a soft glow
  • Can manifest eyes and mouth for expression
  • Height comparable to a small child or teenager
  • Highly flexible and shape-shifting form
  • Often depicted with a calm, friendly expression
  • Wears human clothing when interacting with others (typically a dark outfit with a cape)

Personality

Rimuru possesses a calm, analytical mind that approaches problems with logic and reason rather than impulsive action. His personality reflects his background as a competent adult trapped in a new world, giving him a成熟 (mature) perspective that guides his decision-making. He values fairness and equality, which drives his mission to create a society where monsters and humans can live together without prejudice or conflict.

Despite his strategic nature, Rimuru is genuinely kind and cares deeply for those he considers friends or allies. He takes responsibility for the safety and well-being of his followers, often putting their needs before his own comfort. His diplomatic approach extends to all interactions—he prefers negotiation over confrontation and seeks mutually beneficial solutions whenever possible.

  • Calm and analytical in crisis situations
  • Diplomatic and prefers negotiation over violence
  • Protective of friends and subordinates
  • Open-minded and willing to accept differences
  • Strategic thinker with long-term goals
  • Sometimes too trusting or naive
  • Maintains a sense of humor despite circumstances
  • Values equality and fairness in his governance

Notes

Rimuru Tempest represents a unique take on the isekai protagonist archetype, combining the power fantasy elements with genuine political intrigue and nation-building. His journey from a powerless slime to one of the most powerful beings in his world demonstrates both personal growth and the expansion of his responsibilities.

  • Originally named Satoru Mikami in his past life as a human
  • Reincarnated after being killed by a random street attacker in Japan
  • Possesses the unique skill "Predator" allowing him to absorb abilities
  • His "Great Sage" ability provides analysis and strategic support
  • Founded the nation of Tempest in the Jura Forest region
  • Achieved Demon Lord status after consuming a large number of magical beings
  • Forms alliances with other Demon Lords including Milim Nava and Carrion
  • Series created by Fuse and illustrated by Mitz Vah in serialized light novel format
  • Anime adaptation produced by Eight Bit, airing from 2018 onwards
  • For similar diplomatic isekai protagonists, explore characters from "Log Horizon" or "The Saga of Tanya the Evil"

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