| Normal | Normal (Back) | Alternate costume | Swimsuit|
Casual | Goddess | Original Design | Original (Back)
Closeup | Takeuchi Design
|Also known as:|| Tamamo|
Cas-ko (キャス狐, ?)
|Appears in:|| Fate/Extra|
All Around Type-Moon
|Voice actor:||Chiwa Saito|
|Character type:||Servant (Master: Hakuno Kishinami)|
|Likes:||4½ tatami mat of happiness|
|Dislikes:||The her on the earth|
|Natural enemy:||Dark Studmon Seimei|
Caster's identity is Tamamo-no-Mae, a woman of astonishing beauty that served the retired Emperor Toba the end of the Heian era (794-1185). Known as Misukume (藻女, ?) as a child, she was said to be the human form of a white-faced, gold-furred nine-tailed fox. She started to serve the court at the age of eighteen, and later became a lady-in-waiting of Toba, under the name Tamamo-no-Mae. She became the favorite of Emperor Toba due to her beautiful face and great knowledge. The exact accounts vary, but her identity as a fox was later exposed by an Onmyouji investigating the cause Toba's illness at the time.
Her infamy grew at the plains of Nasu after fleeing from the court, and an eighty thousand man army was dispatched at the order of the retired emperor to kill her. She defeated the force, but eventually lost to humans during the second battle. Her corpse was said to have become the Killing Stone (殺生石, Sessho-seki?), which released a problematic cursed poison that killed approaching people and animals until it was shattered by the monk Gennou Shinshou and its fragments dispersed to three places in Japan named Takada. It's said that the remaining fragments that were scattered became the “split-tail foxes” and “spirit dogs” and were used as familiars by practitioners in each region.
Tamamo-no-Mae is a soul created from the sun goddess Amaterasu, and she is a unique facet of the goddess rather than a mere Earth Spirit. She is believed to be a nine-tailed fox spirit with many of the attributes associated with tantric deities known as Dakini, but she is frequently mistaken by many as one of the Inari or even sometimes as a manifestation of Buddha. She cannot be called a human-spawned Heroic Spirit as the facet of a goddess, but she willingly embraces the role in order to "become a good wife." Accepting the limits inherent in the role of a Servant, many of her original powers have been sealed away.
Her original source, Amaterasu, Golden White Face (金色白面, Konjiki Hakumen?), is the deification of the sun. She still exists despite being distantly ancient, and being a Divine Spirit of her class allows for the time axis to have almost no bearing on her. If someone were to look upon her normally in her mausoleum, they would be burnt to a cinder after seeing a huge sun. Hakuno, encountering her within a dream, sees a large golden-furred, nine-tailed Divine Spirit, and they are able to interact with her. Amaterasu is only the source of Tamamo-no-Mae, so that is not the form she would take on if she were to return to her full power.
Caster has short pink hair and yellow eyes. Her standard outfit, Blue Witchcraft-User’s Clothes (, ?), are those in which she feels most relaxed, but she feels they are not aggressive enough for modern standards.
As seen in Fate/Extra CCC, when Caster was Twice's Servant, she had a more mature appearance; she chose to wear her hair in a high ponytail with the same ribbon.
Caster is sometimes comic relief, being a goofy, silly, and cheerful young fox girl. She sometimes takes the battle and the situation each week of the game seriously. She falls in love with the protagonist, placing herself in the role of their wife regardless of their gender. She expresses that the most important thing over anything else is love.
Caster is again selectable as one of the servants for Hakuno Kishinami.
The past versions of Twice H. Pieceman and Caster appear as a bonus boss fight. Twice's Caster attempts to act more seriously and has different hairstyle.
Caster displays attacks like Curse: Fiery Heaven (呪相・炎天, ?), Curse: Frigid Heaven (呪相・氷天, ?), and Curse: Chaos Heaven (呪相・密天, ?). She can also use Charm: Spirit Theft (呪法・吸精, ?) to absorb energy from the enemy.
All of Caster's parameters are at a low E rank due to her Master's lackluster ability. Her strength and endurance have a slow growth rate, her agility has a medium growth rate, her luck has a fast growth rate, and her mana has a very fast growth rate. The eight other tails of her original form have also been granted Servant bodies. With her Origin Form, she becomes capable of feats like moving faster than light and the reversal of time. She can reduce the distance from the Horsehead Nebula back to the original galaxy to zero to instantly cross the distance. 
The Witchcraft that Caster uses is all physical phenomena performed with her own body. While common Magecraft is a program that "recomposes what exists around", Witchcraft is a program that "recomposes the raw materials in one's own body."
"This time there is only one due to the constrains of the Moon Cell, but originally I could produce a million troops from my multiple tails!"
—According to Caster's own words
Distant Land of the Torn BlossomEdit
Distant Land of the Torn Blossom (常世咲き裂く大殺界, Tokoyo Sakisaku Daisakkai?), translated as Land of Eternal Bane in the English localization, is a Skill that involves the use of the Red Spider Lily Killing Stone (ヒガンバナセッショウセキ, Higanbana Sesshouseki?). After her death, Tamamo-no-Mae turned into a rock named Killing Stone, which was tinged with a terrible curse-toxin and caused the humans and animals that approached it to die from poisoning. It was originally located in the plateau of Nasu, Tochigi, but later it was broken by a virtuous priest named Monk Gennou and then scattered in three locations in Japan that were called Takada. Furthermore, the remnants that were scattered at that occasion became Osaki Kitsunes and Inukamis and said to have been turned into familiars by many wizards from various places.
In the game, this Skill gives magical damage to the enemy while also causing a Poison status. However, it can only be activated when Caster's HP is below 30%.
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6
Fate/EXTRA material - SERVANT Parameter and Skills: SERVANT CASTER, p.007 English | Japanese
- Master: Main protagonist
- Identity: Tamamo no Mae
- Gender: Female
- Height, Weight: 163cm/49kg
- Alignment：Neutral Evil
- Strength: E
- Endurance: E
- Agility: B
- Mana: A
- Luck: D
- Noble Phantasm: B
- Territory Creation: C
- Witchcraft: EX
- Shapeshift: A
- Suiten Nikkou Amaterasu Yanoshisu Ishi
Range: 3 ~ 30
Maximum number of targets: 100 people
- Master: Main protagonist
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7
Fate/EXTRA material - Character Profile: Tamamo-no-Mae, p.038 English | Japanese
Tamamo no Mae
- Height: 163cm
- Weight: 49kg
- Blood type: Unknown
- Birthday: Unknown
- Image Color: Pink
- Talent: Serious Break
- Likes: 4½ tatami mat of happiness
- Dislikes: The her on the earth
- Natural enemy: Dark Studmon Seimei
- Height: 163cm
Fate/Extra CCC encyclopedia - Golden White Face
Golden Fur, White Face. The nine-tailed divine spirit we get a glimpse of in Casko's third SG. Deification of the sun. Amaterasu gone delinquent.
When Casko goes to nine-tails mode this is what she will......not be.
All this is is the distantly ancient but still existing original source of Casko.
When you're a divine spirit of this class, the time axis has almost no bearing on you.
Normally someone entering the mausoleum would be burnt to a cinder, but our Xavier, meeting our expectations like always, not only is not incinerated, but demonstrates his usual reckless bravery (stupid menu choices).
She would have been in a naked nine-tails spin on the naked apron, but the ethical barrier couldn't be breached so we made sure she wore formalwear.
Oh and if a person who doesn't dream go in, all he'll see in the mausoleum is a huge sun.
- ↑ Caster conversation
Fate/Extra CCC, CCC route English | Japanese
Even though you were flung to the edge of the galaxy......!
Even if this is a conceptual space, you shouldn't have been able to cross that distance in an instant!
Are you able to fly faster than light?
Of course, I came flying faster than light!
At any rate, I won't let my master by seduced by a demon in this critical moment.
The reversal of time is nothing special as well, just reduce to zero the distance from the Horsehead Nebula to this galaxy.
This is called zero distance love!