Libra Sanguis was born to a loving family, his father Atticus Sanguis and his mother Varinia Sanguis both being very empathetic and charismatic individuals, with free spirits. Taking after them both to what some would consider an extreme, he is a very open individual who is difficult to forget, with his strong personality and almost extravagant behavior. From an early age, he has chosen to go by his family name instead of his given name, introducing himself as Sanguis and requesting to be called such. Growing up he's shown himself to be a very outgoing person, though seemingly with a total disregard or lack of understanding for boundaries, always eager to seek out new people to speak with and befriend, often winning over someone even if they initially dislike him, though not everyone can be swayed by his attempts. His sense of confidence and calmness is remarkably sturdy, shrugging off insults and negativity without so much as a flinch in almost all cases, only losing his cool and falling into anger if someone violates his moral code, such as attacking an innocent or one of his precious people, whether that attack be verbal or physical.

His family originated back in Ancient Rome, and still carries traditions from way back then, such as the Latin language and having a Roman theme to their home. After the empire had fallen, however, his ancestors migrated over to England, integrating into the magical population living there and setting down their roots. This allowed Sanguis to be raised in a magical environment, regarding it as a normal and expected aspect of life, and giving him an awareness of the magical community and how it works, at least as aware as a preteen child can be. He's familiar with a few spells that his parents commonly use, remembering the name and what they do, but no personal practice himself due to being too young. Like every magical child, of course, he has had experiences with wild magic, his inner reserves of mana being pushed out into the world during a moment of extreme emotions, or panic.

His first case of wild magic was when he was four years old, he had been wandering outside while his parents were busy with something in the house, and decided that finding and climbing the biggest tree he could find was a brilliant idea. Doing just that, upon reaching as high as he could the realization hit him that he didn't know how to get back down, and as he was fidgeting around trying to figure out how to reach the ground again, the tree branch snapped beneath him. Plummeting through the air, he screamed in fear and squeezed his eyes closed, but never felt himself touch the ground, his momentum slowing and then stopping. When he opened his eyes again, he saw that he was floating just a few inches above the ground, and just as it registered in his mind that he wasn't hurt, he plopped down onto his butt, his parents suddenly beside him after they heard his scream and teleported to him. Later on, once they confirmed he wasn't injured at all, they chastised him and explained what had happened, how he reflexively protected himself with his magic.

There were a few more cases, but relatively minor since he was more careful from then on and not prone to outbursts like many other kids his age were. The funniest case was when his parents had gotten into an argument with a man who had a very sour attitude, and he got angry when they insulted his mother, so angry that his magic lashed out in response and scorched the mans eyebrows off. Though his parents had scolded him for it, they couldn't stay serious, finding it hilarious as well, and they took him out for ice cream shortly after. When he got a bit older and was told about how he would be going to Hogwarts to learn how to control his magic, his parents got him some books about the school, including one that described the story of Harry Potter and his friends, Hermione and Ron. This fascinated him, and made him even more excited to learn than before, eager to go to the same school as this hero and explore all the places that they had been to.

Now that he's finally old enough, he can barely contain his joy, looking forward to meeting so many new people, and curious what house he'll be placed in, though he was personally hoping for Hufflepuff.

As of his eleventh birthday, he stands at roughly 5'8 and weighs an approximate 77lbs. His hair is slightly past average length, being a reddish-brown in color, and his eyes are emerald green in color. His frame is naturally on the slender side, and his skin is lightly tanned.