Calypso Rosier

Slytherin House

Calypso Rosier is a Slytherin student who attends Hogwarts School of Witchcraft and Wizardry and the Heiress of The Ancient and Most Noble House of Rosier. She started her schooling in September 1988. At the beginning of her fifth year, in September 1992, she is designated as the girls new prefect for Slytherin.

Calypso is extremely gifted in Defense Against The Dark Arts, dueling in particular. She seems to spend much of her time at Hogwarts in the presence of her fellow fourth year Slytherins Cassius Warrington and The Carrow twins, Hestia and Flora. She also becomes a friend of Harry Potter early in the month of November 1991.

## **Early Life:**

Calypso was born in early 1977 to Evan Rosier and Nicole Rosier, nee Yaxley. Nicole died in 1979 during a Death Eater raid rather than going to Azkaban. Evan was also an accused Death Eater, but he got off on the “Imperius Defense”. Very little is known about Calypso, but it can be presumed she was, at the very least, taught not to fear The Dark Arts from an early age, as she shows no hesitation in using the “Tormensia” curse on one of the Gryffindor students who attack Harry. This curse is an entry level to spell to The Dark Arts, and she gives Harry Potter a book titled “The Forsaken Magic: An Introduction To The Dark Arts” for Christmas in 1991. In addition, she gives him a book of questionable curses for his 12th Birthday.

## **1991:**

Two days before the Slytherin-Gryffindor quidditch match she and her friends rescue Harry Potter from the hands of four Gryffindor fourth-years. She ends up healing his wounds and invites him and his friends to join her at the Slytherin table at some point. Harry takes her up on that offer on the morning of the quidditch match.

At some point before Yule she sits down with Harry Potter and teaches him the art of gift-giving. Thus, due to her help Harry is able to choose the appropriate gifts for both his friends and his fellow Slytherin first-years. For Christmas she gifts Harry an introductory text into the Dark Arts.

## **1992:**

The morning before the Slytherin-Hufflepuff Quidditch match, on March 21st, she is joined for breakfast by Harry and his group of first-year friends. At some point during their meal she invites him to join her weekly dueling get-togethers. Harry readily agrees.

March 28th marks the very first time when Harry Potter joins her duelling club. They meet as usual in the same abandoned classroom that her and Hestia have spent almost two years warding. The group duels for some time. When Harry ends up putting a good fighting against Cassius everybody is impressed.

She does her Hogwarts shopping for the upcoming academic year alongside Cassius Warrington, and Flora and Hestia Carrow on August 19th. Before entering Flourish and Blott's her and her friends stumble upon Harry Potter, Daphne Greengrass, Tracey Davis and Charlotte Weitts. She is introduced to Charlotte and afterwards she catches-up with Harry and his friends. Using the fact that her family is the majority stakeholder in the bookstore she gets herself and her friends in whilst skipping the queue caused by Gilderoy Lockhart's book signing.

On September 1st, she alongside Cassius, as the new Slytherin prefects, lead the new students to their Common Room. The evening of September 4th finds her in an abandoned classroom with Cassius Warrington where he is trying to convince her to help him elevate Harry to the position of Seeker in the Slytherin Quidditch team. He revels to her that her father had been discussing Harry with his parents.

Calypso and her group are having breakfast on the morning of September 7th when Harry and his group join them. She uses that opportunity so that after breakfast, on their way to class, to slip Harry a note asking him to join her and Cassius in their classroom used for practice at eight that evening. In the same note she also informs him that informal dueling club is due to resume next Saturday night. That evening, in the classroom used for dueling, she ends up convincing Harry to tryout for the position of Seeker in the Slytherin Quidditch team by pointing out all the benefits that such a position would grant him.

She is present on September 25th, alongside Cassius, when Harry wakes up after the almost deadly prank on the Slytherin Quidditch team. They talk, with Cassius expressing his belief that the Weasley Twins were responsible for the prank. During their encounter she ends up revealing to Harry that she is not at liberty to tell him where she had learnt the Muffliato privacy spell. On the evening of September 26th, after Harry's duel with Hestia, she and Cassius convince Harry to focus on more important stuff and not seek revenge against the perpetrators of the prank that landed him some days ago in the Hospital Wing.

On the evening of October 24th, during one of the meeting of her dueling club, she ends up teaching Harry the counter to the blinding curse. A conversation ensues between the two where Harry asks about her opinion on 'dark' magic and the reasoning behind the Ministry's classification of some magic as such.

The evening of Samhain finds her protecting a body-binded Harry from the wrath of the Caretaker. Later on, in the Slytherin Common Room, she takes Harry away before he is able to inflict more damage into Malfoy after he had goaded him into a fight. She brings Harry to an empty room and they have a conversation where Harry explains the reasoning behind his distaste for the term 'mudblood'. The two talk, and among other things Harry confesses his belief that the Dark Lady had not been a pureblood either.

In the aftermath of the Dueling Club, on December 17th, she and her group of friends follow Harry as he is being lead to safety by Grace. Once inside the private room, she adds her own privacy spells on top of Grace's. There she is part of the conversation where Harry claims not to be either the Heir of Slytherin or a Parselmouth. She also thinks of Harry's safety outside of Slytherin given Charlus new found ability.

## 1993:

After Snape's announcement of Harry and Ares disappearance on June 4th, she alongside the Carrow Twins, go to the boy's room where they have noticed Harry's friends departing before them. Before they can discuss properly they are joined by Grace who mentions that she has placed an illegal tracking charm on a piece of Harry's jewelry, and thus she suspects that the entrance to the Chamber of Secrets is in Moaning Myrtle's bathroom. Shortly afterwards, they proceed, under the protection of the Disillusionment Charm, towards it. There, before entering the Chamber with Grace, proceed to stun the rest of their friends to ensure that they do not get themselves kill. They descend into the Chamber and they join the outgoing fight against Riddle and the Basilisk in their bid to rescue their friends.

Following the resurrection ritual, she listens to Lockhart story about Katalysator. Following the decision to spare Emily's life, she departs alongside the rest with the help of Fawkes back to Hogwarts. There, after the Unspeakables question them she decides to take a vow of silence about what occurred in the Chamber of Secrets instead of having her memories wiped.

## Skills/Abilities:

### Dueling.

She is extremely gifted when it comes to Defense Against the Dark Arts, with a particular talent when it comes to dueling.

### Dark Magic.

She has no problem using dark magic and is aware that the Ministerial classification of magic is none-sense. Her approach is a pragmatic one where she learns what she deems prudent and helpful without trying to understand them at a fundamental level.