Physical Description: Her tangled black hair falls to her shoulders. Badly coiffed, she's frightening, with that icy stare and a physique worthy of children's witch tales. Katniss has a superb hooked nose with a pustule, as disgusting as it is hairy. She holds a firm jaw, which gives her a stern look. Her brown eyes seem to shoot lightning bolts and her dry mouth makes even the most observant person pale. When she smiles, i.e. when she meets a Muggle and her smile is nothing more than irony or sadism, you immediately notice her missing teeth, which she wanted to keep that way. Two bulging brown eyes stare at you with fervour and judgement. She tends to stand up straight, but her slightly husky build and pudgy little fingers betray an attempt at grace. Petite, at around 1m39, no one thinks she'll grow any taller than 160cm. Yes, Katniss is awful, horrible, and her temperament fits her physique perfectly.

Mental Description: Physically she's horrible, but mentally it's exactly the same. She swears by the purity of her blood and is quick to attack Muggle-borns. She's manipulative, very jealous and possessive, short-tempered - in short, she's really not someone you should get involved with, unless you're a pure-blood. Otherwise, she'll spit on your back.

Biography: Katniss Hailemarijam comes from the famous Dutch family of the same name. The Hailemarijams, the most powerful and famous wizards in Holland, are known for being ruthless, unapproachable and extremely wealthy. So rich, in fact, that their name is even known in their own country in the Muggle world. At the head of twenty or so magical forest estates and dominating the agricultural world, they could almost be described as a business. They are involved in many fields: gastronomy, tourism through visits to their lands, crafts, politics and sales. Determined to extend their power around the world, each potential heir is married to one of the purest bloods of the country concerned. This is how Katniss came to be, through the union of her two parents in a most private marriage, Daan and Helene (Scottish, formerly Campbell) Hailemarijam. They are two extremists who head a family of five children. Apart from Katniss and her father, the whole family is blonde. They live on the outskirts of Godric's Hollow.
Katniss grew up in a very private environment, being taught by a private tutor. She was generally very dissipated in her lessons.
Daan Hailemarijam is the Dutch ambassador to England while his family hands over the gastronomic business. Helene is a former Campbell, a Scottish family of meagre education and capital, who is using the influence of the son-in-law's family to restore it image. The mother of the family indulges in straight professions. Katniss feels close to her parents, even if the feeling is not mutual.
The first child, Ron Hailemarijam, has just turned 20 and is already married to young Siske. He is a boy who places great importance on his work, just like his father. Isaac, on the other hand, is the traitor. At 18 and fresh from his meagre studies, he plans to marry a half-blood girl. Forever cut off from his family, Katniss acts as if she had never heard of him, as if she had never had a brother named Isaac. Then there's Freek, another of her brothers. He's in his 16th year and is a real piano prodigy. Katniss isn't too close to him, she finds him too mature and adult. As for Thea... I have to tell you about Thea. Thea is the jewel of the family. Sublimely beautiful, she is the complete opposite of her sister. Popular, endearing, gifted and intelligent, she has it all. Even though she still harbours a strong hatred of Muggles, she's an extremely pleasant girl (in particular, she doesn't show it to her Muggle friends, but spits at them behind their backs). Katniss firmly believes that she is much better than she is.

First Instance of Magic: Katniss's first instance of magic was when she was 7 years old, at home. She was having fun of annoying her father's owl, Archibald, when, out of anger because he had flown away, she turned him into a flobberworm. At first, she didn't understand, but her parents were pleasantly surprised, as none of their children had ever undergone metamorphosis.