Reincarnated As A Slime Characters

Rimuru Tempest (originally Satoru Mikami) is the big one — the protagonist who literally gets reborn as a slime in 'That Time I Got Reincarnated as a Slime'. He’s the classic example: an ordinary guy from modern Japan who dies and wakes up in a fantasy world as a lowly slime, only to start stacking overpowered skills like 'Predator' (later 'Gluttony'), learn names, make pacts, and build a whole nation. The show walks you through his metamorphosis from amusingly weak blob to a charismatic leader with a dragon friend (Veldora), a court of loyal named monsters, and political headaches that would stress any ruler. I love how the anime blends cozy slice-of-life moments in 'The Slime Diaries' with full-on kingdom-building and diplomatic intrigue in the main series — that mix is why Rimuru’s journey feels so satisfying; you get both the silly and the epic. There aren’t actually a bunch of different people reincarnated as slimes in the series — Rimuru is unique in that respect. What the story does play with are other kinds of isekai/summoning ideas: Shizue Izawa (often called Shizu) is a Japanese girl who was summoned into the world as a child and becomes a pivotal emotional anchor for Rimuru; many other major players are native monsters, demons, dragons, or humans who either awaken or evolve through naming and power shifts rather than being reincarnated from another life. So if you’re asking who’s a reincarnated slime, it’s Rimuru — but the world is populated by other transplanted humans and dramatic transformations that keep things interesting. Personally, I still grin thinking about how a slime became the calm, strategic center of such a bizarrely lovable court.

I've always been fascinated by how a single twist—being reborn as a slime—can anchor an entire story, and when you take the question literally, the simplest, clean answer is: there's one. In the canon of 'That Time I Got Reincarnated as a Slime', the main—and practically only—human who gets reincarnated as a slime is Rimuru Tempest. The manga follows Rimuru's journey from his reincarnation, through his growth into a nation-builder and a powerful being, and all of the chapters and side arcs revolve around him and the many people and monsters he meets and impacts.

That said, the world of the manga is teeming with slime creatures, summoned manifestations, and shape-shifters tied to Rimuru's unique skills, so things can feel fuzzier if you interpret "reincarnated as a slime" more loosely. Rimuru's skill set spawns different forms and clones, and other characters can take on slime-like attributes or be transformed by magic and skills. Spin-offs, crossovers, and dramatic scenes sometimes show alternate versions, illusions, or comedic one-off slimes—which can make a literal count feel misleading if you're scanning panels fast.

So, if you're asking strictly how many characters were originally humans who then came back as slimes in the main manga storyline: it's Rimuru, one. If you're counting every slime-like being, reincarnation-flavor cameo, or magical copy across the manga and spin material, then there are many more entities inspired by that single reincarnation moment. Either way, I love how the series uses that single reincarnation to build an enormous, lively cast—it's pretty addicting to follow.

Hot take: the whole conversation about who’s strongest in 'That Time I Got Reincarnated as a Slime' turns into a delicious stew of raw power vs. utility. For me, Rimuru sits at the center of that stew — not necessarily because he’s the single most destructive being, but because his toolkit is absurdly versatile. He can absorb, analyze, mimic, and redistribute skills, craft nations, and eventually stand toe-to-toe with Demon Lords and True Dragons. His growth curve isn’t just bigger numbers; it’s exponential utility. That adaptability often tips encounters in ways pure strength can’t.

If you’re measuring raw destructive force, Milim Nava and the True Dragons (like Veldora) are terrifying. Milim’s mood-driven, catastrophic power makes her a walking apocalypse when she’s serious, and Veldora’s status as a Storm Dragon means reality-warping force and age-old magical might. Guy Crimson lurks on another tier: ancient, inscrutable, and his presence radiates authority the way a supermassive star radiates heat. His feats imply doctrine-level power rather than flashy one-off attacks.

I tend to rank them by categories: raw destruction (Milim, Veldora), strategic and multipurpose power (Rimuru), and legacy/authoritative dominance (Guy Crimson). Diablo, Benimaru, and other high-tier subordinates can be terrifying in their niches, but when tables turn it’s usually the adaptable or reality-warping folks who decide the outcome. Personally, I love how the series mixes political weight, friendships, and sheer spectacle — that blend keeps every “who’s strongest” debate fun rather than purely mathematical.

I stan how this series celebrates found families. Rimuru’s bond with Veldora—a dragon who’s basically a gamer trapped in a cave—is weirdly wholesome. Rimiru’s human form reveal? Iconic. The voice acting (both sub and dub) slaps—Megumi’s playful tone, Veldora’s over-the-top laugh.

And the OP/ED tracks? Bangers. But what hooked me was the moral ambiguity—Rimuru isn’t a hero; he’s a pragmatic leader who’ll obliterate armies to protect his people. Relatable. 🎮

The origin story of Rimuru is the heart of why I fell into 'That Time I Got Reincarnated as a Slime' in the first place. He begins as Satoru Mikami, an ordinary office worker from modern Japan who dies in a random act of violence and is reborn in a fantasy world as a lowly slime. That rebirth isn’t simple: the slime inherits a mysterious set of abilities—most notably a predator-like skill that can devour and mimic other beings. From there, Rimuru’s journey is equal parts survival, curiosity, and building a community. When he meets Veldora and decides to give the dragon a name, that small act of compassion becomes the seed of the Tempest nation.

Veldora’s origin is pure dragon-lore energy: a mighty Storm Dragon who earned his reputation through conflict and was sealed away for the danger he posed. His personality is boisterous and almost childlike beside his true destructive potential, and his bond with Rimuru is amusingly paternal and comedic. Then you have Shizue, the solemn, tragic figure who was a human summoned from another time and place and bound to the fire spirit Ifrit. Her life was cut short by war and cursed power, but her presence leaves a lasting moral anchor for Rimuru.

The supporting cast mostly springs from what they were before Rimuru met them: the ogres who become Benimaru, Shuna, Souei, and Hakurou are tribal warriors who evolve into Kijin after being named; Ranga is a direwolf from Veldora’s pack who becomes Rimuru’s loyal companion; Milim is an ancient Demon Lord with a confusingly childlike temperament and immense power; and many villains and schemers, like Clayman, are human manipulators whose origins are political and ideological rather than mystical. I love how origins in this series aren’t just exposition—they’re emotional hooks that explain why characters fight, grow, or change, and that’s what keeps me rewatching scenes over and over.

The power hierarchy in 'That Time I Got Reincarnated as a Slime' is fascinating because it blends raw strength with strategic brilliance. Rimuru Tempest, the protagonist, starts off seemingly weak but evolves into an absurdly overpowered being after consuming Veldora and acquiring Ultimate Skills. His adaptability and ability to analyze opponents make him nearly unstoppable. Then there's Milim Nava, the Dragonoid who's casually planet-busting level—her playful demeanor hides terrifying power. Guy Crimson, the primordial demon lord, is another top-tier force; his centuries of experience and control over fire make him a nightmare to challenge.

But let's not forget the underrated ones like Diablo, Rimuru's loyal subordinate. His cunning and near-invincibility in combat place him high on the list. And then there's Veldora, Rimuru's 'brother'—a True Dragon whose mere presence shakes the world. The series does a great job balancing these powerhouses, making clashes feel like genuine spectacles rather than one-sided stomps. What I love is how their personalities shine through even in battles—whether it's Rimuru's tactical mind or Milim's childlike glee while destroying mountains.

I get a kick out of pointing out the little anime-only moments in 'That Time I Got Reincarnated as a Slime' because they often give side characters a chance to shine in ways the light novels or manga didn’t always allow. The most obvious person who gets anime-exclusive stuff is Rimuru himself — beyond the core plot, the TV show adds lots of extra comedic beats, inner-monologues and everyday reactions that were either trimmed or arranged differently in the source. That includes expanded conversations with Veldora when they’re just messing around, which play as cute roommate-comedy scenes in the anime.

Beyond Rimuru, the supporting cast gets a lot of original material. Shion and Shuna receive extra domestic and gag scenes (hot springs, cooking mishaps, and exaggerated rivalry moments). Benimaru, Souei and Kurobe also get silly filler bits and training skits that amplify their personalities. Gobta and the goblin squad are often used for comic relief with anime-created shorts. Milim and other Demon Lords occasionally pick up bonus dialogue or slightly altered encounters that beef up their presence on-screen. A big source of anime-exclusive content is the spin-off 'The Slime Diaries' and the Blu-ray/OVA extras — those are packed with slice-of-life vignettes for almost everyone in the cast. I love those because they give flavor to relationships that the main story doesn’t dwell on, and they’re just pure fun to watch.

Hunting for official 'That Time I Got Reincarnated as a Slime' merchandise can feel like a little quest—and I love that about it. I usually start at the big, reliable online shops: Crunchyroll Store often carries apparel, keychains, and collaboration goods; Right Stuf Anime and BigBadToyStore are great for DVDs/Blu-rays, box sets, and import figures. For Japan-direct items I check AmiAmi, HobbyLink Japan, and Good Smile Company, especially when I'm after Nendoroids, Figma figures, or limited-run statuettes of Rimuru and other favorites. Don't forget Premium Bandai for official limited items and Animate for posters, artbooks, and exclusive prints.

If you're hunting rarer or secondhand collectibles, Mandarake and Suruga-ya are treasure troves—I've found some out-of-print artbooks there. eBay and Yahoo Auctions (via proxy services like Buyee or ZenMarket) work too, but I always examine seller ratings and photos closely to avoid bootlegs. For handmade or fan-crafted goodies—custom enamel pins, stickers, or fanart shirts—Etsy and independent sellers on Twitter or Pixiv are adorable options. Pro tips: pre-order when possible to lock in prices, watch figure-tracker sites like MyFigureCollection for restocks, and factor in shipping/customs from Japan. I always double-check official product images and logos to tell authentic goods apart from knockoffs. I still get giddy opening a package that finally brings a piece of the 'That Time I Got Reincarnated as a Slime' world to my shelf, and that little thrill never gets old.