Miyamoto Musashi in the anime Samurai Resurrection is a legendary samurai warrior considered one of the greatest swordsmen in Japanese history. He is summoned or resurrected to defend the realm of Japan against a powerful demon named Shinnosuke Kagami, who has returned after being sealed for centuries. His background is rooted in the historical figure of the same name, a masterless samurai of the late sixteenth and early seventeenth centuries, but within the story he appears as a heroic figure called upon in a time of supernatural crisis.

Musashi possesses a complex personality with a strong sense of honor and a deep spiritual side. He holds great respect for tradition and the ancient ways of the samurai, following a rigorous code of conduct that governs his actions. At the same time, he is not afraid to question authority or challenge the status quo when he believes the greater good is at stake. He tends to be quiet and introspective, often working independently rather than as part of a team. He is highly analytical and observant, relying on his physical senses and instincts to dominate the art of the sword. His demeanor is disciplined and focused, yet he can display assertiveness and competitiveness when driven by a purpose.

His primary motivation is to protect the nation from the demonic threat, using his incredible skill and strength to defeat Shinnosuke Kagami. He acts as a key defender in the story, with his role centered on combat against the supernatural antagonist. His relationships are not deeply explored in the available material, but he interacts with other characters as a stalwart ally in the fight against evil. Throughout the narrative, he demonstrates unwavering commitment to his mission, and his development emphasizes his adherence to his moral compass and warrior ethos.

In terms of abilities, Musashi is renowned for his remarkable physical strength, speed, and mastery of the sword. He is described as a highly skilled swordsman capable of extraordinary feats in battle. His style reflects the historical Niten Ichi-ryu, though the anime emphasizes his raw combat prowess and his ability to analyze and counter opponents effectively. His presence alone is said to be overwhelming, and he uses his abilities with great effect against the demonic forces. Overall, Musashi in Samurai Resurrection embodies the ideal of a noble, powerful, and ethically driven samurai facing otherworldly danger.