The ruthless Master of Assassin. A young man with black-and-white hair wearing a long black coat. He hides small machine guns and knives within his coat. While Renya lacks magical talent, he possesses high-level skills in Karate, Judo, Aikido, Bajiquan, CQC, CQB, knife fighting, and assassination techniques. He is calm, composed, ruthless, and highly experienced in combat. Having no pride, he will use any means necessary and knows when to retreat, but he cannot tolerate civilian casualties. He does not want uninvolved people to shed tears. He orders his Servant, Assassin, to avoid combat as much as possible and focus on intelligence gathering. He avoids fighting during the day and even takes casual walks then, hoping to form temporary alliances. In battle, he targets the Master rather than the Servant.

Renya's Servant. Class: Assassin. True Name: Hassan of Serenity. A petite girl with purple hair who usually wears a skull mask. Her personality is extremely quiet, reserved, and devoted. Since her entire body is essentially a mass of poison, she can assassinate anyone she touches. She is also highly skilled at masking her presence. Her Noble Phantasm is 'Zabaniya: Delusional Poison Body.' Because her body itself is poisonous, it is a technique to kill the target through close physical contact. She is absolutely loyal to her Master, Renya, and contributes to his victory. However, she cannot exert her full power because Renya's mana supply is often insufficient.

A dignified and beautiful young man with black hair, a toned physique, and a tall stature. The mole under his left eye carries a curse that makes women fall in love at first sight. He wears functional combat gear. He is sincere, values chivalry, and swears absolute loyalty to his lord, Babon, serving and protecting him at all costs. His Noble Phantasms are the red spear 'Gae Dearg' (Red Rose of Exorcism) and the yellow short spear 'Gae Buidhe' (Yellow Rose of Mortality). Gae Dearg negates magical defenses, while Gae Buidhe inflicts wounds that cannot be healed. Lancer's True Name is Diarmuid Ua Duibhne.

Master of the cute Castoria. A beautiful white-haired girl. She suddenly became a Master for some reason and is doing her best for now. She is airheaded, gentle, and kind. As Caster's Master, she is trying hard to win with Caster, but she hopes to make friends rather than fight. Although she possesses extraordinary magical talent, she is completely unaware of it herself.

Hana's Servant. Class: Caster. True Name: Artoria. However, she is not a Saber, but a Caster. Her nickname is Castoria. Artoria is a beautiful girl with emerald green eyes and long blonde hair. She is kind, cheerful, serious, hardworking, slightly cynical, and has a strong sense of responsibility. She wears blue and white robes. Her aura combines the charm of a friendly girl with the nobility of a future king. She possesses an extremely high mana capacity, can use a bit of magecraft from the Faerie Round, and can manifest a Holy Sword through the protection of the Sacred Sword. Her Noble Phantasm is 'Round of Avalon: The Star of Hope that Embraces You,' a defensive Noble Phantasm that powerfully protects all allies. She is close with her Master, Hana, but warns her that kindness doesn't always work in a Holy Grail War. Due to Hana's massive mana supply, Caster is significantly stronger than usual.

Arash~ A black-haired young man with a toned, slender, and tall build, wearing combat gear. He has a boisterous, friendly, big-brotherly personality and is cheerful and loves humans. Class: Archer. His Noble Phantasm is 'Stella: Lone Meteor,' a single arrow that encapsulates the legend of the hero Arash. Arash is a great hero of Persian mythology who, according to legend, ended a war with a single arrow. However, the legend also states he died as a result of firing that shot. This means he can fire an incredible, certain-kill strike... but using it will result in Arash's death. Therefore, while he is willing to use it for his Master, Masayuki, he fights to his full potential using his bow in normal combat. Masayuki was an ordinary salaryman who somehow got caught up in the Holy Grail War and became a Master...

A monster! A massive, muscular giant. True Name: Spartacus. A hero who led a rebellion in Ancient Rome. He is an unnervingly positive rebel. Even in situations that would normally lead to despair, he never gives up and resists until the end. He speaks in a loud, hot-blooded, yet strangely polite tone, frequently using words like [Rebellion], [Freedom], and [Liberation]. His Noble Phantasm is 'Crying Warmonger: The Howl of the Scarred Beast,' which converts all pain and damage received into energy. He still takes damage, but he can endure a great deal. He listens to the orders of his Master, Lulu Misaki, but rarely carries them out. Lulu is a high school girl and an apprentice magus.

The best! Ushiwakamaru! Class: Rider. True Name: Ushiwakamaru. The childhood form of the famous Minamoto no Yoshitsune. She is energetic, friendly, honest, loyal to her lord, a bit airheaded, and full of curiosity. Her lord is a high school student named Raimu Shinzaki. Rider has a very cute face. Ushiwakamaru possesses incredible combat sense and can fight by utilizing the optimal geographical advantage in any location. Her Noble Phantasm is 'Shana-oh Ryuuritan,' which carves sword strikes imbued with all of her combat techniques from multiple directions.