|Caules Forvedge Yggdmillennia|
|Appears in:|| Chibichuki!|
|Character type:||Human, Magus, Master|
|Dislikes:||Performing, Elder sister|
|Natural enemy:||Sulking elder sister|
|Image Color:||Sky blue|
Caules was born into the Forvedge family as the younger brother of Fiore. Though he had no interest, he began to study magecraft only to act as a "spare" for his sister. Despite his disinterest, it was a path he wanted for himself, and he was able to to do what was required of him to support the fate of their entire clan, simply to study his craft. As his sister became the head of the family and approached the highest seat of Yggdmillennia under Darnic after many months, he began to explore other avenues for his life rather than live as a piddling magus who would never accomplish anything. The Holy Grail War interrupted those plans, and while he was originally to travel to Romania as a simple backup, the Command Spells began to manifest upon his arrival. With no choice, he was to participate as a Master.
Though Caules is eighteen, he has a childish, freckled face that does not match his age.
Caules has no desire in joining the Holy Grail War, and he had not even wanted to become a magus at all. Though he has come to enjoy the process of magecraft itself, he has never wished to devote his entire life to the practice and finds his reason for starting to be laughable; thus, as shown when owning a computer, Caules does not seem to strictly adhere to some common norms of a magus. He likes being able to interact with "absurd, scientifically impossible phenomena" using his own hands, but magi are humans who become something less than human in his eyes. Reaching inhuman levels, that world is rife with "seekers", those who become removed from sentimentality and compassion and would massacre thousands for the sake of research like magi in medieval times. He is honest, and does not like to lie even when presented with an easily believable one.
He does not currently have a wish, even though most magi would want to reach the Root and give up their lives for a chance at it. Though he does desire it as a magus, there are other things he wants. He doubts that even the Grail can so easily reach it in the first place, instead being the first step on a long path. Although he will not know until he reaches that point, he instead thinks of the possibility of reviving his sister should she perish. As she means more to him than the Root that he would reach in one hundred years, her revival would overwrite his own wish. He notes that she likely would not revive him if he was to perish.
Upon the true start of the Great Holy Grail War, Fiore notices that Caules has been restless, especially when faced with the glares of the other, more experienced magi of Yggdmillennia. Though he has no desire to participate, the Command Spells appearing provides no choice in the matter. It is fortunate under the current system, as they would have been enemies under the Fuyuki Holy Grail War system. While there would normally have been contention between two magi siblings with the same interests, the difference in power would have only meant Fiore murdering him as he cowered in fear. Fiore buys "Frankenstein's blueprints" for his catalyst, and joins the other three remaining Masters in summoning their Servants. Nervously muttering the spell repeatedly, they begin the ritual, and he manages to complete the verses without hesitation. Caules adds the required verse to make sure his Servant is Berserker, and the ritual is successful.
As the Servants are to name themselves, Rider of Black asks Caules in place of Berserker after she does not wish to state her name. Thinking it is solely because she cannot speak, Rider stare flusters Caules into revealing it, much to Berserker's displeasure. After the event is over, they leave together, Caules sighing in relief that it has ended. Though he can order her into spiritual form, he dislikes to force it and spoil her mood, especially due to her sullen moans that begin to echo in his head. He later decides to have a proper talk with her due to worries over her strength, especially due to her being completely opposite from the legend. As she had been in a bad mood, he apologizes for revealing her true name when they do not know if the other Masters may come back as enemies later, soothing her somewhat. They decide to simply try to survive over all else and get to know each other.
After he sorts out her legend and learns her wish for a mate, she wants to know his wish as well. While he could lie about wanting to reach the Root, which would easily be believable due to Berserker's knowledge gained from the Grail, he tells her the truth that he does not know. After explaining himself, she grunts in approval, and he takes his leave. He finds himself tugged on by Berserker, who gives him a flower. After accepting it, she begins to rip flowers to shreds, one by one, and thinking of the part of the legend where she was said to have thrown the farmer's daughter into the lake thinking she would float like the flower game they were playing, retreats quickly.
Caules is a not powerful as a magus, with all of the Forvedge family's talent having gone to his sister. He is the lowliest of the Masters with poor aptitude, so he summons Berserker due to her being a relatively new mystery with mundane parameters. The homunculi providing magical energy for the Servants and her being able to gather magical energy with Bridal Chest solves the normal problem of the high expenditure of a Berserker-class Servant.Darnic expects little from him except to use Berserker to cause confusion on the battlefield with the proper use of Command Spells. His craft is summoning.
He owns Frankenstein's blueprints (フランケンシュタインの設計図, Furankenshutain no sekkeizu?), written by Victor Frankenstein, for the use as Berserker's summoning catalyst. It was bought from a freelance magus by Fiore for his usage. It is an old piece of paper with a human figure on it with the words "the perfect human" scribbled in the lower right corner, and it describes functions like her Blasted Tree sacrificial Noble Phantasm. One sentence he overlooked mentions, "This lightning attack is not simply lightning, but rather a power that has Frankenstein’s will imbedded within it. As long as it exists, she will never perish."
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9
 Fate/Apocrypha material - CHARACTER Profile: Fiore Forvedge Yggdmillennia, p.060-061 [T]
Fiore Forvedge Yggdmillennia
- Age: 19 years old
- Height: 162cm
- Weight: 47kg
- Blood type: A
- Birthday: 12th July
- Three sizes: B84 W57 H82
- Talents: Bare-handed nutcracker
- Likes: Small animals in general
- Dislike: Small animals in general
- Image colour: Light Blue
- Enemy: Shaggy dogs
Comment from Yuichiro Higashide & Ototsugu Konoe
- スリーサイズ：Ｂ８４ Ｗ５７ Ｈ８２
Comment from Yuichiro Higashide & Ototsugu Konoe
- Age: 19 years old
 Fate/Apocrypha material - Encyclopedia: Caules Forvedge Yggdmillennia [Person's name], p.157-158
Caules Forvedge Yggdmillennia [Person's name]