The confirmed central characters include Miyamoto Musashi, the Oni Lady, Ono no Takamura, Izumo no Okuni, and rival Sasaki Ganryu. Capcom's main character material introduces Musashi and his allies, while separate public material identifies Ganryu as the protagonist's rival. This page is a source-locked roster guide: it names the people currently established around the game without pretending that every character has the same role, playable status, or amount of story detail.
Miyamoto Musashi is the protagonist
Miyamoto Musashi is the central playable hero of Onimusha: Way of the Sword. Public previews describe a young swordsman who wants to prove himself by his own skill, even after an Oni Gauntlet becomes bound to him. That tension between personal swordsmanship and unwanted supernatural power gives the roster a clear center.
Musashi should be the first answer for a searcher asking who the main character is. The character hub does not replace the dedicated Musashi guide, which covers his motive, face-model context, gauntlet relationship, and distinction from other Onimusha stories in more detail. Here, his role is simply the anchor for the people and conflicts around him.
The Oni Lady is linked to the gauntlet
The Oni Lady is a named Oni woman connected to Musashi's Oni Gauntlet. Public character promotion describes her as supporting and advising Musashi from within the gauntlet, and as appearing when needed. That makes her a companion-like figure with a direct relationship to the game's core artifact.
The available material does not make her a confirmed second player character or prove a full party system. It is safer to call her a named character connected to Musashi and the gauntlet. The dedicated Oni Lady guide explains that narrower search intent without blending her identity into the wider roster.
Ono no Takamura and Izumo no Okuni are named allies
Capcom's official character page lists Ono no Takamura and Izumo no Okuni alongside Musashi and the Oni Lady in its central lineup. That is enough to include both in a confirmed roster. It is not enough to assign a complete combat kit, an exact quest sequence, family connection, or final loyalty to either person.
This is especially important because both names have historical and cultural associations beyond the game. A historical source can help explain why a name is familiar, but it cannot be used to write fictional game events. This guide treats the official roster as the boundary: their presence is confirmed, while individual plot details need direct game or Capcom evidence.
Keeping them on a hub page rather than prematurely giving each a thin standalone profile is intentional. A useful character page needs a distinct question it can answer. Until public or release-verified material supplies that depth, the roster is the more honest destination for searches about the wider cast.
Sasaki Ganryu is the rival outside the ally list
Sasaki Ganryu belongs in the character roster, but not in the companion list. Capcom's public preview describes him as Musashi's rival and places their duel at Kiyomizu-dera Temple. Official trailer descriptions also link both men to Oni Gauntlets while framing Ganryu's approach as darker.
That relationship makes Ganryu a meaningful foil for Musashi rather than a name placed beside the allies without context. The contrast is strong enough to support a separate Ganryu page, which focuses on the rivalry and what public material confirms about the duel. This hub only establishes where he belongs in the map of names: he is the central named rival.
Do not assume every named character is playable
Onimusha: Way of the Sword is publicly framed around Musashi's journey. A named character can be an ally, advisor, rival, narrator, or story figure without becoming a second playable fighter. The same caution applies to labels such as companion or character roster. They establish story relevance, not a menu selection or multiplayer mode.
That boundary prevents a common kind of search-result misinformation. A cast list should not turn promotional art, voice credits, or a brief trailer appearance into a claim about player control. When a later official announcement or direct release verification confirms a specific playable role, it can be added with a source. Until then, this page keeps the roster useful by making only the narrower, documented claims.
How the character pages fit together
The guide library gives each character question a distinct home. The Musashi page answers who the main character is. The Ganryu page explains the named rival. The Oni Lady page explains the woman connected to the gauntlet. This hub is the entry point for a reader who wants the confirmed cast before choosing one of those focused guides.
The structure also avoids keyword cannibalization. A broad search for the characters reaches this roster; a search for the main character reaches Musashi; a search for Ganryu or the Oni Lady reaches the dedicated pages. The links provide context without copying the same article three times under slightly different titles.
What the roster does not settle
The current public material does not establish every relationship, every appearance, every character's end state, or a final complete list of all antagonists and bosses. It also does not authorize a page to import details from historical biographies, older Onimusha entries, or unrelated adaptations.
For that reason, the list above is described as the confirmed central cast, not as a spoiler-complete encyclopedia. It can grow when Capcom or the released game provides reliable additions. For now, it gives players a clean starting point built around the five names with clear public roles: protagonist, gauntlet-linked ally, two named allies, and a rival.