These allies have been allied with Sword of Logos for thousands of years ago. Ever since all the previous Sabers have interacted with them and made them become their allies.

Knights of the Round Table: The team of knights that serve King Arthur. They had been allies with the first Saber thousands of years ago. Rumor to say that Saber was a member before he was Saber. They are Brother in Arms of Swordsmen and now they went into hiding and resting from the evil master they had betrayed.

Lailah: Lailah is also known as Lady of the Lake. She went on a journey with one of the previous Saber and his big brother alongside Velvet Crowe. Saber gave Rekka to her and rests in the Lake to see who is worthy enough to become the next Saber.

Sebastian Michalis: A mysterious butler with an unknown origin. He is a loyal butler and servant toward Leon's family for eight generations. Sebastian cares for his master Leon. He continues to protect Leon's happiness after the loss of his mother and his father's disappearance.

Nuidis Vulko: The chief counselor to the Counsel of Five of Atlantis, also the mentor and advisor to Kamen Rider Durendal. He is a loyal friend of the Serizawa Family. He helped and raised Suhara Serizawa, all after his father died. He had been swimming by Suhara's side ever since his mother died. He taught him how to wield Kaiji, give him lessons about the history of their realm, training him in the ways of the sea.

Dragon Guardians: The Dragon Guardians have been keeping all the realms safe to maintain balance throughout the multiverse. Brave Dragon was once a member before he became Saber's partner.

Charlemagne: He is the legendary dragon and old friend of Merlin and Brave Dragon. He is a former member of the Dragon Guardians. He lives in the Fire Realm for his retirement.

Hisirdoux Casperan: People call him Douxie for short. He is a wizard-in-training who worked under the apprenticeship of Merlin, just like Sophia and Allen.

Archie: He is Douxie's shapeshifting dragon familiar commonly in the form of an anthropomorphic feline and the son of Charlemagne.

House Tarron: Great House that rules the planet Akiridion-5. They are the only extraterrestrial allies of Sword of Logos.

Blinkous Galadrigal: People call him Blinky for sort. An old friend of Rai, and Genbu Shinwa. He has been an ally to Buster for many generations, from Rai's father to his grandfather, to his great grandfather, and so on. He has been guiding Rai in becoming Kamen Rider Buster, as for all his ancestors.

Elvendale Heroes: These teenagers in the Mirage Realm live in a part of the land called; Elvendale. They are friends of Leon.

Serizawa Royal Family: The Serizawa Royal Family are the original and current rulers of the Ocean Realm. Ever since the first member of the family was chosen to wield Jikokouken Kaiji. The Holy Sword of Time then became the sign of the ruler of the Ocean Realm. Each generation of Durendal has been the king-in-waiting of the Ocean Realm.

Tsurugi Clan: The Tsurugi Clan is a samurai clan with a duty to protect Japan and its culture for generations. Ever since the first female member of the clan was chosen to wield Eneiken Noroshi. The Holy Sword of Smoke then became the leader of the clan. Each generation of Sabela has only been women of the clan wielding Noroshi.

[Infomation of the two families; The families have been in a feud for many generations ever since the two holy swords chose them. They never agreed to each other's tactics or leadership or swordsmanship.]