Who Are The Main Reincarnated As A Slime Characters In The Anime?

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.

Rimuru Tempest is the clear main character who was reincarnated as a slime — he used to be Satoru Mikami from Japan and wakes up in a fantasy world as a slime with a handful of broken skills that snowball into incredible power. The anime makes a point of showing how unique that reincarnation is: most other central characters are native to the new world, summoned from elsewhere, or transformed after Rimuru gives them names and purpose. For example, Shizue Izawa was brought into the world from Japan through summoning and becomes one of the most important emotional threads in Rimuru’s early life, but she wasn’t reborn as a slime. Beyond the mechanics of reincarnation versus summoning or evolution, the series thrives on the relationships formed afterward — Rimuru’s court of named monsters, his friendship with Veldora the storm Dragon, and encounters with demon lords and human nations. If you’re looking for multiple people who literally become slimes, the show doesn’t really offer that; it uses Rimuru’s unique status to explore how one transplanted person can reshape an entire world — which is exactly why I find the story so captivating.

The short, blunt version is: Rimuru Tempest — formerly Satoru Mikami — is the main (and essentially the only) reincarnated-as-a-slime character in 'That Time I Got Reincarnated as a Slime'. He’s the anchor of the plot, and the story revolves around what that reincarnation lets him do: gather allies, give names that trigger evolutions, and take on a surprisingly complex political role. The anime does a neat job of making his growth feel earned while also letting him enjoy the small pleasures — food, friendship, and peaceful life-building — which makes him endearing rather than just overpowered. If you want nuance, the series also includes other people from Japan or other worlds who were summoned or displaced rather than reincarnated: Shizue is a big example — her backstory gives emotional depth and helps explain some of Rimuru’s motivations. Then there are monsters like Benimaru, Shuna, and Shion, who aren’t reincarnations but become uniquely powerful thanks to Rimuru’s naming and leadership. The show plays with the difference between being reborn as someone new and being transformed by a name or pact, and that difference becomes one of the show's most interesting themes. I personally enjoy how the series balances the goofy and the serious moments — it’s weird, warm, and occasionally political in a satisfying way.