Jacques is a Servant that represented the financial organization of the Knights Templar so I created a design based on the black arm covers worn by bankers in the past. The pouch was also made to look like a wallet, and bar codes, which are associated with money, were also incorporated into the robe as well as a hood that he wears all the time, a set of glasses that also assists him into reading. The wrists, ankles, and neck are of one size thinner than usual because he tends to get sick. wearing a black set of pants and boots, as well as having his sword sheathed in its scabbard but always having his shield on his left arm.

Jacques stubbornly tries to following the Templars' vows of "poverty, chastity and obedience" and "death before surrender". As the Templars' funds are the property of God, his attitude in regards to handling money is unusually practical. He endeavours to keeps his emotions under control during his dealings so as to never be at a disadvantage.

That said, his stomach gets upset easily to the point of vomiting, during which time he can only think about cute things.

Jacques was counting the finances of Chaldea's holds, being an avid accountant, yet mostly he was always staying in secluded rooms, despite being a Saber, he took his duties pretty seriously, specially the accounts of each servants, except Gilgamesh...obvious reasons.