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That Time I Got Reincarnated as a Slime, often shortened to Tensura, starts with Satoru Mikami, a Japanese office worker who is killed in a street attack and reborn as a slime in a fantasy world. He finds he can absorb creatures and copy their abilities, gets help from a skill called the Great Sage, and takes the name Rimuru Tempest. Through alliances with goblins, wolves, ogres, dwarves and lizardmen, he builds a monster town that grows into a nation, Tempest. This page covers 17 characters: Rimuru and the dragon Veldora, the people of Tempest, the neighbours of the Great Jura Forest, and some of the Demon Lords. Every profile stops where the character is introduced, so there are no spoilers.
Rimuru Tempest is the protagonist, a Japanese man who was killed and reborn as a slime in a fantasy world. At first he just tries to survive, but he learns he can absorb creatures and mimic their abilities, helped by the Great Sage, an AI-like skill inside his mind that analyses problems for him. Instead of conquering, he builds alliances with the races around him. Japanese voice: Miho Okasaki.
Veldora Tempest is the Storm Dragon, one of the four original True Dragons and rated a catastrophe-level threat. When Rimuru finds him, he has been sealed in a cave for 300 years. Impressed by the slime's intelligence and confidence, he becomes his friend, and the two name each other, sharing the surname Tempest. Japanese voice: Tomoaki Maeno.
Benimaru is the ogre prince whose village was destroyed by orcs. When he first appears he attacks Rimuru, believing the slime is responsible, and agrees to a temporary alliance once the truth comes out. He is the older brother of Shuna and leads the small group of ogre survivors who come to Rimuru's side. Japanese voice: Makoto Furukawa.
Shuna is the ogre princess and Benimaru's sister, one of the survivors of their village. She is skilled at making clothes and uses healing and holy magic, which makes her valuable to the growing town in more ways than one. She treats Rimuru with deep respect from the moment the ogres join him. Japanese voice: Sayaka Senbongi.
Shion is one of the six survivors of the ogre village and has appointed herself Rimuru's bodyguard and secretary. She is a very strong fighter but a terrible cook, and she often speaks out of turn, which makes for plenty of comedy. Her devotion to Rimuru is total. Japanese voice: M·A·O.
Milim Nava is a carefree, whimsical dragonoid, one of the strongest Demon Lords and known as the Destroyer. Despite the frightening title, she becomes Rimuru's friend and often drops by Tempest, where her mischief tends to cause trouble for everyone around her. Japanese voice: Rina Hidaka.
Diablo is a powerful demon who joins Rimuru's side later in the story. Devoted and disciplined, he serves Rimuru with complete loyalty and takes every task given to him with great seriousness. His intense devotion is a running source of both strength and comedy. Japanese voice: Takahiro Sakurai.
Gabiru is an arrogant lizardman and the son of his tribe's chieftain. Overconfident and fond of posing, he creates comic moments whenever he tries to look grand. In season 1 his pride pushes him into risky choices during the crisis with the orc army, and his path ends up crossing Rimuru's. Japanese voice: Jun Fukushima.
Shizue Izawa, known as Shizu, is a Japanese woman who was brought to this world as a girl during the bombing of Tokyo in the Second World War. Because Rimuru also came from Japan, the two connect quickly and form an important friendship. She is a key figure in season 1 and shapes the protagonist's path. Japanese voice: Yumiri Hanamori.
Hakuro is an old ogre and a highly skilled swordsman who survived the destruction of his village. After the ogres join Rimuru, he becomes the sword teacher for Rimuru himself and for the young hobgoblins. Behind his calm manner is one of the sharpest blades in the whole cast. Japanese voice: Hōchū Ōtsuka.
Souei is an ogre and Benimaru's friend, another survivor of the destroyed village. Quiet and efficient, he works as a scout and spy in a ninja-like style and is usually the one who brings news of what is happening outside the town. He prefers to work in the shadows rather than in the spotlight. Japanese voice: Takuya Eguchi.
Gobta is a small hobgoblin and the leader of the goblin riders. He looks young and comes across as goofy, so he is often the butt of jokes, but he turns out to be a surprisingly skilled swordsman. His mix of slapstick and unexpected talent makes him one of the most recognisable faces in Tempest. Japanese voice: Asuna Tomari.
Rigurd is a goblin sub-leader in the village Rimuru protects at the start of the story. He is completely loyal to Rimuru from early on and often serves as comic relief with his enthusiasm. As the goblin village grows into a town, he remains one of the familiar faces among its residents. Japanese voice: Kanehira Yamamoto.
Ranga is a dire wolf who first meets Rimuru when his pack raids the goblin village the slime is protecting. After that clash he chooses to serve Rimuru and becomes one of his closest companions. Big, loyal and eager to please, he is rarely far from his new master's side. Japanese voice: Chikahiro Kobayashi.
Kaijin is a dwarf blacksmith from the dwarf kingdom of Dwargon. He was exiled after standing up to a minister who insulted Rimuru and was then recruited to the slime's village. His skill at the forge makes him an important early addition to the community Rimuru is building. Japanese voice: Atsushi Ono.
Treyni is a dryad and a guardian of the Great Jura Forest, the forest where Rimuru lives. She appears to warn him about the coming Orc Disaster, a threat to the whole forest, and asks him to stop it. Her request pulls Rimuru into the biggest conflict of season 1. Japanese voice: Rie Tanaka.
Clayman is a Demon Lord known as the Marionette Master, because he prefers to manipulate others from behind the scenes rather than act directly. His schemes are behind several of the problems Tempest faces, and he is the main antagonist of season 2. In April 2027 he gets his own spin-off anime, Clayman REVENGE. Japanese voice: Takehito Koyasu.
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