Castalia Sullivan

• Aaron Maximus Sullivan (Younger twin brother)

• Silvanus Clarence Sullivan (Younger brother)

• Serenity Beatrice Sullivan (Younger sister)

• Fabian Dominic Sullivan (Younger brother)

**Castalia "Cas" Allegra Sullivan Irvine** (b. 12 January, 2018) is a halfblood witch from Tower Hamlets, Greater London, England. She is the daughter of Thomas Sullivan, a muggle, and Trinity Sullivan (neé Irvine), a halfblood witch. She has four younger siblings including her twin Aaron, Silvanus, Serenity, and Fabian. She was sorted into Gryffindor House at Hogwarts' School of Witchcraft and Wizardry.

## Appearance

Castalia is considered particularly beautiful with fair skin, long and wavy light brown hair that reaches a bit below her shoulder, and blue-gray eyes with long lashes. She usually has second-hand clothes on her, though they are spotless and impeccable, and hardly ever has any accessories on her. The only thing she has is a "BFF" bracelet on her wrist: A gift from her brother she hardly ever takes off.

Her body language conveys a sense of openness and amiability. Her hand movements are usually quite contained, though she can't help herself whenever she gets too excited. Still, one gets the impression that she might be older than she appears to be.

## Personality

Castalia appears to be a very mature young lady. She is responsible, tries to be unfailingly polite, and is always assuming a caretaker role regarding others; even if they are older than she. You get the feeling that she is also wise beyond her years and people have congratulated her for, essentially, being a mini-adult.
This is not a good thing.

Castalia is a girl overburdened by the tasks on her shoulders and feels too responsible for the situations surrounding her. She has a hard time with not being an authority figure and lashes out at anyone who tries to parent her. She is deeply mistrustful of others' ability to do things correctly and tends to double-check whenever said things involve her. Due to this, she usually alienates people and comes across as arrogant in the belief that only she can do things correctly.

## Background

### The Irvine Family

The Irvine family is a family made of legends. Famous for their inclinations towards dark abilities, they have always been branded as an evil family and most members did nothing to change that notion; embracing it instead. This is the type of family that appear in children stories as a warning of what corruption can do to them.

However, there is a branch of the family that did not turn dark. A branch of the family that, quite frankly, couldn't care less about the wizarding world as a whole after being branded a "Black Magic Family". Harassment and bullying made it so that they sought refuge in the muggle world and married muggles for generations in hopes that, next time, their kids don't have magic if they "dilute it" enough with muggle blood.

### Early Years

It seems their efforts were successful because, of five children, only Castalia has magic. Her parents went through great lengths to try to suppress it, punishing her very time accidental magic was done in hopes that the magic would just... go away? Castalia says that the only times in her life where her parents paid any attention to her are either from this or due to her beauty; beauty that allowed them to put Castalia in various magazines and win money that they proceeded to squander away.
In their house, Castalia is usually seen as the highest authority figure with her twin brother, Aaron. This is due to Castalia and Aaron basically raising the three kids together and with little support from their parents. They are the caregivers of the house. This is so much so that, if either of their parents is drunk, Castalia and Aaron take care of them. What both of them have done in order to have food to give and clothes to dress is something they are not proud of, but have no option but to believe it was necessary. Both of them resent their parents for their selfishness and irresponsibility and have vowed to be better they.

## Relationships

### Family

* Thomas Sullivan
* Trinity Sullivan (Neé Irvine)
* Aaron Sullivan
* Silvanus Sullivan
* Serenity Sullivan
* Fabian Sullivan
Castalia's relationship with her father is not a positive one.

Castalia's relationship with her mother is not a positive one.

Castalia's relationship with her twin is one of the best relationships she has. She trusts him more than she trusts anyone else, though she has reservations with his temper and his willingness to take the easy road.

 Positive, though she does pity the poor kid for his name.

Positive. Castalia is her main caretaker.

Positive.