Kamen Rider Calibur is a moniker used by those who inherit the title of the . It was originally associated with the Sword of Logos until the original bearer of the name was manipulated by Isaac into siding with the Megids, at which point "Calibur" became synonymous with "renegade" until the third and fourth bearer fights alongside the Sword of Logos. Anyone who becomes Calibur utilizes the Wonder Ride Book in conjunction with the belt and the umbrakinetic
broadsword in order to transform. While transformed, they gain the use of the familiar for combat assistance.
Daichi Kamijo is the previous Flame Swordsman and the second Dark Swordsman. 15 years prior to the series, he is forced to fight Hayato to protect Touma and Luna from him. Failing to save her, Daichi left his
Brave Dragon Wonder Ride Book with Touma before seemingly sacrificing himself in his pursuit of Hayato. Following the battle, only to be killed by Storious, who steals his half of the
Tome of Omniscience. Following this, his soul continues to reside in Wonder World along with those of Luna and the Megids.
Sword of Logos The is a mysterious organization formed by a secret sect of swordsmen sworn to protect the ancient and keep peace in the world. They are led by an individual who holds the title of , a member of a bloodline dating back to the first Master Logos. The highest authority who approve the organization's policies are the Following their final battle with Storious, the Sword of Logos chose to abolish the Master Logos and Sage positions in favor of a council of four. The Kamen Riders of this organization each wield one of 11 unique transformation swords composed of a singular element, which they can use to invoke their combat weapons and transform in conjunction with , with some using either one of three
scabbard-like belts or a Driver unique to their Seiken. Those who utilize the SworDrivers can use up to three books at once while those who only utilize a Seiken or separate Driver are limited to one at a time. While all of the Riders are able to assume varying forms based on the Wonder Ride Books in their possession, books with the same elemental affinity as their sword grant more power compared to those that do not, The gathered Seiken can be used to create the , a relic created from one half of the
Tome of Omniscience that can either place Wonder World and Earth on the brink of destruction or create new Rider powers.
Northern Base The is a branch of the Sword of Logos based in the North Pole and serves as most of the swordsmen's base of operations. Following Touma becoming Kamen Rider Saber, some of the organization's members choose to use his bookstore as a passageway from the Northern Base and back.
Ryo Ogami is an aggressive
great swordsman of the Sword of Logos' Northern Base known as the and the oldest member of the group. He investigates Hayato's betrayal and defection from the Sword of Logos while caring for his son, , In the tie-in prequel
manga,
Supplementary Volume Kamen Rider Saber: Kamen Rider Buster the Comic, Ryo met and befriended Haruka Kiritani during their childhood and attended together, where the former became a teenage delinquent for three years. 20 years prior to the series, after Ryo found the
Genbu Shinwa Wonder Ride Book, he and Haruka were attacked by Shimii and rescued by their Japanese classics teacher, Toshikazu Kamikawa, who chose Ryo to become his apprentice and eventually succeed him as the second Earth Swordsman. Ryo agreed to become the strongest swordsman and protect Haruka's smile. Sometime after Ryo surpassed Kamikawa, he married Haruka, who gave birth to Sora six years after Hayato's betrayal. Utilizing the Wonder Ride Book in conjunction with the geokinetic
Zweihänder, Ryo can transform into . While transformed, he gains
superhuman strength. During combat, he is capable of summoning multiple giant Caladbolgs that can transform into the mecha as reinforcements. He later acquires the ability to telepathically manipulate the Seiken and control their users like puppets, barring the Haouken Xross Saber and Touma.
Reika Shindai is the Southern Base's messenger, an
assassin-class
fencer known as the , and the younger sister of Ryoga. Initially cold and methodical, she slowly warms up to the other swordsmen over the course of the series, They also seek to recreate the world with the , which can be used instead of the
Greater Book, have the ability to assume their human forms, and summon foot soldiers to aid them in battle. he manipulates Legeiel and Zooous into becoming monsters alongside him and help him steal pages from the
Almighty Book so he can end all existence. Retaining his original personality following his transformation, Storious attempts to destroy both Wonder World and Earth, After gaining the
Grimoire Wonder Ride Book, Storious gains necromancy, which he uses to revive the Four Sages as his undead minions, the Lords of Wise. He can also use
Grimoire in conjunction with the Dooms Driver Buckle to become . • : A namesake-themed monster that Legeiel created from the Alter Ride Book. It is destroyed by Kamen Rider Saber. It is destroyed by Kamen Rider Buster. This Megid appears exclusively in the tie-in prequel manga
Supplementary Volume Kamen Rider Saber: Kamen Rider Buster the Comic. • : An atypical Zenkaizer/Super Sentai-themed Megid that Asmodeus created to serve him. It is destroyed by
Akarenger and
Twokaizer. This Megid appears exclusively in the crossover film
Saber + Zenkaiger: Super Hero Senki and is voiced by .
Kamen Rider Falchion is a moniker used by those who become the , Desast is voiced by . While transformed, he is capable of fighting through telekinetic movements on his own, though he can also be wielded by either a living silhouette called or another swordsman. Additionally, the Kougouken Saikou is connected to the Ankokuken Kurayami, which allows him to summon the latter and combine both swords' power to create a black hole-like portal and teleport his opponent to another location. After creating the Wonder Ride Book, Yuri can use it to assume his eponymous final form where he transforms into Saikou Shadow's armor to take over its body and utilize his full physical combat prowess. He can also change the setting on the
X-Swordman Wonder Ride Book to assume one of the following forms: Yuri is portrayed by . ==Guest characters==