Benimaru is a major character in the popular anime series That Time I Got Reincarnated as a Slime, also known as Tensei Shitara Slime Datta Ken in Japan. The story centers around Satoru Mikami, an ordinary office worker who dies and is reborn as a slime in a fantastical new world. From there, he builds a nation and gathers powerful allies—among them, Benimaru, who makes his first appearance in episode 4 and quickly becomes a central figure in the narrative.

Now, when we talk about Benimaru, it’s hard not to notice just how impactful he is. He’s not just another warrior; he’s actually the leader of the Ogre tribe, a proud and formidable race living within the forested regions of the Jura Tempest Federation. Benimaru stands out because of his unwavering bravery, deep loyalty, and an intense sense of duty toward his people. But beyond physical strength, what really defines Benimaru is his sharp mind—he’s highly intelligent and perceptive, which makes him not only a fierce fighter but also a trusted strategist and advisor among his kin.

One of the most striking things about Benimaru? His mastery over fire. Through his sword techniques, he can generate and control flames with incredible precision. This rare ability stems from his bloodline—he’s a descendant of the Flame Spirit, after all—making him one of the few in this world capable of wielding such power. In battle, this gives him a huge edge, turning every clash into a display of both skill and raw elemental force.

As the series unfolds, Benimaru grows into one of the closest allies of the protagonist, Rimuru Tempest. There’s a deep mutual respect between them, and Benimaru clearly looks up to Rimuru, recognizing his leadership and immense power. At the same time, Benimaru takes on a protective role, often placing himself on the front lines to shield others. Whether it’s defending comrades or standing firm in the face of danger, Benimaru consistently shows that he’s someone you can count on—no matter the cost.

Looking at his personality more closely, Benimaru fits the ISTJ type quite well. He’s practical, grounded, and deeply committed to order and tradition. His actions are guided by a strong moral compass and a no-nonsense work ethic. You’ll often see him making quick, logical decisions under pressure—something typical of ISTJs, who thrive on structure and reliability. Plus, his attention to detail and dedication to duty reflect the kind of disciplined mindset that defines this personality type.

And then there’s the Enneagram angle. Benimaru strongly aligns with Type Eight: The Protector. He embodies their core traits—justice, courage, and a natural instinct to defend those he cares about. He doesn’t shy away from responsibility; in fact, he embraces it, stepping up whenever leadership is needed. That said, like many Eights, Benimaru can sometimes come across as overly dominant or aggressive, especially when his vision clashes with others’. He struggles with showing vulnerability, often keeping his emotions in check to maintain the image of a strong, unshakable leader.

So, putting it all together, Benimaru is far more than just a powerful warrior. He’s a layered character whose values, strengths, and even flaws make him compelling. From his fiery combat skills to his steadfast loyalty and complex personality, Benimaru plays a crucial role in shaping the world of That Time I Got Reincarnated as a Slime. And honestly, it’s hard to imagine the story without him. Benimaru brings balance, intensity, and heart—all while staying true to who he is. Benimaru, without a doubt, leaves a lasting impression.