Fate/stay night

A young man who aspires to become a hero.
He is the sole survivor of the Great Fire that occurred in Fuyuki City 10 years ago.

The saber class heroic spirit who enters a contract with Shirou.

The heir to the prestigious Tohsaka mage family.
She attends the same high school as Shirou and is popular among the students as an honors student.

The archer class heroic spirit who enters a contract with Rin.

The lancer class heroic spirit.
His master is unknown but he demonstrates that he is equally powerful as Saber.

She is an English teacher at Homurahara Academy where Shirou and Rin attend.
She is also the supervisor of the Archery Club. She has known Shirou since he was young and acts as his older sister.

An underclassman to Shirou who is almost like a family member.
She has a very reserved personality but...

He is Sakura Matou's older brother and knows Shirou since middle school.
He is popular among the female students but he is actually cocky and often looks down on people.

The eighth servant who is not supposed to appear during the Holy Grail War.
He seems to have some connection to Kirei but for now he entered a contract with Shinji who lost Rider.

The priest of the Kotomine Church and he serves as the Overseer of the Fifth Holy Grail War.
He is a survivor of the last Holy Grail War and is also Rin's legal guardian.

A girl with silver hair and red eyes who is from the Einzbern family.
She goes by Illya. She is Berserker's master.

A Berserker class servant who has entered into a contract with Illya.
This servant class specializes in extreme strength.

A Rider class servant who entered into a contract with Shinji.
This servant class specializes in mobility but she also proves to be quite capable of using magic as she was able to set a magic circle around the school.

He is a teacher at Homurabara Academy, the school that Shirou and Rin attend.
He is Caster's master.

A mage class servant but her master is unknown.
She utilizes Ryudou Temple as her base as she harvests mana from the city's citizens.

The assassin class servant but his master is unknown.
He seems to be working with Caster and stands guard at the gates of Ryudou Temple.