Physical Description: Like the air surrounding him, Kostas appears to be cold and closed off. Everything about him is dark, from his jet-black hair, to his dark eyes, his black attire, and unfriendly appearance. The only thing that is not dark about him is his very pale complexion, giving him a stark, striking appearance. He stands tall for his age at 152 centimeters, with a slim, athletic build. He looks strong and unwavering.

Mental Description: Kostas doesn't care for anyone and doesn't mind pointing out his dislike for people, and to humiliate others because he can. To feel something, he usually pulled mean, bordering sadistic pranks on his fellow classmates to entertain himself. He is just like the depths of hell: Cold, hard to navigate, and someone you shouldn't want to spend too much time around. Kostas isn't some 'morally gray' cute character. He enjoys destruction, causing chaos thrills him beyond belief. He is someone that should be avoided, if you know what's good for you, a little bomb just waiting for the right timing.

Biography: Being the child of a dark wizard does bring its fair share of luggage. Kostas was born too a naive mother who glorified and romantizised his father, while forgetting to be a good mother in the process. She was so terribly in love and infatuated with him, that it removed any trace of motherly instincts. The man eventually grew bored of her, and the time between visits grew longer and longer, until he just never came back. Kostas himself had essentially no memory of his father, and while his mother persisted the idea that he would one day come back, that just seemed less and less plausible the older he got. The years went by, and his mother grew more and more erratic, and even developed some sort of resentment for him. He never developed any sort of family relations, and his classmates in muggle school never really dared to get closer too him than absolutely necessary, making him closed off and cold, morally drained and ethically questionable. It's not certain whether he inhabits many emotions beside anger and boredom. The air surrounding him seems colder, but that could just be how he looks at people as well.

First Instance of Magic: During a lesson in muggle school at eight years old, Kostas was paired with another student—one of those overly cheerful, optimistic types who always tried to include him, despite his clear disinterest in other kids. She kept talking and trying to be friendly, asking him questions he had no intention of answering. Her persistence annoyed him severely. So much so, that he with grating irritation reached out and took the flower from her that she'd been twirling between her fingers since recess was over. The effect was immediate. As soon as he touched it, the petals darkened, curling inward as if they were suddenly centuries old. The stem turned brittle, brown and crumbled into dust.

The girl screamed, staring from the dead flower to him in shock. Kostas only smirked at the response. He hadn’t meant to do it—not consciously—but seeing the fear in her eyes sent a thrill through him. He had taken something delicate and ruined it with nothing but his touch.

The ministry got involved and had to come an obliviate his classmates, but the rumors lived on. No one could explain why, but from that day on, rumors spread that anything Kostas touched would wither and die. He never cared to correct them.