|This article is about a/an title used by several identities in Kamen Rider Saber.|
The title of Master of Logos was first used by the original founder of the Sword of Logos, who was among the first humans to enter the Wonder World. Master Logos' successors each swear to protect both the Great Book and the world. Whoever holds the title of Master Logos leads the Sword of Logos' swordsmen and has complete access to the organization's forbidden tomes. Every Master Logos is related, as each successor is chosen from a specific clan. As stated by Ryoga Shindai, it has been the duty of Shindai family to protect each Master Logos for generations.
Known holders of the title
- "Master Logos" (first holder of the title; deceased)
- Several unnamed successors
- Isaac (most recent, abdicated)
- According to Storious, the name Master Logos is actually a title. Yuri later confirms that there were other holders of the title before the current one.