Mental Description: Jonas is a boy with a restless spirit, mischievous and brave. Born in Brighton, he grew up between the waves of the English Channel and the barely contained magical noises in his father’s house. From an early age, he showed an unusual curiosity, dismantling clocks, releasing cages, and asking inconvenient questions at the worst moments. His humour is sharp as a razor, and his energy seems endless — always running, jumping, climbing something, or plotting some wild scheme.
But behind the easy laughter lies an almost fierce instinct for justice. If he sees someone treated unfairly, he won’t hesitate to step in, even if it means getting punished. He hates being bored and would rather take risks than live the same old routine. Fascinated by magical creatures and secret passages, he dreams of exploring every corner of Hogwarts — especially the forbidden ones.
He can be impulsive, but he has a good heart and a stubborn loyalty to those who earn his trust.

Physical Description: Jonas is 11 years old and stands about 145 cm tall. His face is fair, dotted with freckles that scatter like sun-dust across his nose and cheeks. His eyes, a striking grey-blue, are always alert — as if already expecting the next trouble. His brown hair is long and messy, with curls falling untidily over his forehead and ears, usually dishevelled by some gust of wind or recent prank.
Despite his slight build, he has surprising agility, the result of many years climbing trees, rooftops and school walls. His expression shifts quickly from mocking grin to brazen provocation — it’s hard to tell when he’s serious.
He often walks with his hands in his pockets and shoulders relaxed, as if he’s always in the wrong place on purpose.

Biography: Jonas was born in Brighton, England, on 8 June 2014. He is the son of Malcolm Sinclair, a wizard specialising in magical creatures, and Diana Sinclair, a primary school History teacher.
Raised between his father’s magical world and his mother’s sceptical one, Jonas lived in a home where reality seemed like a tightrope between the ordinary and the extraordinary. From an early age, he was exposed to some of his father’s eccentricities — like a puffskein pet named “Mr Slime” and a library full of books that whispered when no one was watching — but he also attended a Muggle school, where he learned to fend for himself and get up to mischief.
Even without fully knowing what awaited him, Jonas grew up on stories of Hogwarts and the wizarding world told by his father. When the letter finally arrived, he was more relieved than surprised. Perhaps deep down he always knew he belonged to that other world, and that Hogwarts would be just the beginning of the greatest adventure of his life.

First Instance of Magic: The first time something magical happened to Jonas, he was 7 years old. It was a rainy day in Brighton (England) and he was stuck indoors with his older cousins, who had hidden his favourite toy — a plush dragon named Quim. Frustrated and angry, Jonas ran down the hallway with such force that the door of the cupboard where the toy was hidden swung open on its own, pushing one of the cousins back. The toy flew through the air and landed in his arms — as if it had been called.
Everyone was stunned, including Jonas, who felt a strange energy vibrating in his chest as if the world had answered his emotion. Later, his father smiled knowingly, as if he’d expected it all along.