Marielle is a French woman of average height with a voluptuous figure, she has fair skin, wide, dark brown eyes, full lips and possesses black hair, worn in a bob-cut. She wears pink lipstick on her lips and pink nail polish on her nails. Despite being hundreds of years old, she has the physical appearance of a woman in her twenties.
In her first appearance, she wears a light green hooded robe, the typical outfit of purchasers at the Black Market.
In her second appearance, Marielle wears a light pink jumper, with a purple stripe on its centre, black trousers with a black belt, a black pair of boots, and carries a black handbag, she also wears a long red coat and a light purple scarf on top of this, when outside.
In her third appearance, she wears a long black dress with a plunging sweetheart neckline and straps, as well as a long black veil over her face. This is what she wears when she attends her coven.
In her fourth appearance, she wears a light pink jumper and dark coloured pair of trousers with matching shoes.
Marielle is a woman who appears maternal but has an immature streak at times. For those she loves or sympathizes with she will do what she can to help them, even if it can be considered amoral. She also thrives when making bargains as she will request favors or payment before doing anything.
She used to work and live in the temples of the old gods, using her body as conduits to channel divine power into men. Part of her profession in that time was to bear more members for the community.
Marielle says that she has been around as a human since Marie had been beheaded.
At some point in the past she attempted to read the Testament of Carnamagos in order to find a way to break Phyllis' curse. However, the grimoire was too much for her mind to bear and she could barely keep herself together.
Marielle first encountered Chise Hatori, when she was in an auction, trying to purchase a young Dragon, from the Black Market, in order to take it back to its rightful home. Marielle, tells Chise that she can be of use to her and the two make an agreement, that Marielle would give Chise the money to buy the young Dragon, and Chise would give Marielle, Dragon's blood, after obtaining it, in return.
A short time later, Marielle goes to Elias Ainsworth's household, presumably to meet Chise again, the three go inside Elias' house. After the explanation of Elias' and Chise's involvement with the Dragon, she realises that Chise is unable to give her the Dragon's blood, that she originally made a covenant to give her. Chise apologizes for this.
Marielle then takes a look at Chise's odd-looking hand, and does a spell, to try and cure it, to no avail. Chise, explains that her hand was cursed by a dragon, after being questioned. Marielle, then asks Chise, if she is interested in becoming a Witch, and that they specialize in curses. In hope, that if Chise joined, her curse would be able to be removed. While Chise does attempt to learn about the coven she ultimately refuses. However, Marielle sympathized with her and so she told Elias of a method of transferring the curse.
A short time later, she is seen leading a man out of a room where she provided him a magical charm (that would be billed as a massage) when the leader of her coven, Phyllis, projected herself to state that Marielle informing Elias of the curse transferring method was against the rules, Marielle defended her actions by saying that she only did the act for the sake of Phyllis and that she if she was going to be a troublemaker she would leave the coven.
However, Phyllis comforted Marielle, and told her that she was still a child if she believed she wasthe only one who was alone and that she was still responsible for her actions. Marielle was then told to make amends, so she quickly put on her red jacket and left to find Chise. Once she does, she helps her catch up to Joseph by transforming into a bull.
Marielle later reappears in Chapter 64, having come across an injured companion of Seth Noel. She assisted him in returning to the College, whereupon she came across Chise and Elias. Elias then asked her to look into a matter involving one of their colleagues and she discovered that something was draining his body of magical energy using the same grimoire that had been stolen from the College and that she instructed Elias to read to break Chise's curse.
Skills and Abilities
As a Witch, Marielle happens to be closer to an Other while still being human. She possesses magical abilities as a result and as well as specializes in casting and removing curses through the teachings of her coven. Some of the feats she has displayed are:
- Communication Spells: She has demonstrated extensive use of spells to communicate with others, such as speaking with birds learn where Chise lived, speaking with an individual beneath the notice of others using a Whisper spell, and communicating with the bodies of others while they are unconscious.
- Energy Transference: The blood of temple prostitutes run in her veins, meaning she can lend her strength to others like spirits or the fair folk.
- Longevity: Marielle has been living a longer life than a typical human due to her magical power.
- Maternal Resonance: Marielle emits a presence that reminds others of their mother.
- Shapeshifting: As a Witch, Marielle can turn into an animal for a short time without the need for any other medium. However, she notes that she isn't very good at it and winds up exhausted.
- She is from France.
- In Official Guidebook: Merkmal, her height is 172cm (5'8") and weight is 65kg (143lb).