While MJ isn't a living beacon of positivity and energy, she's known to have an amiable and friendly disposition to those who approach her, albeit mildly cautious on occasion. She's mostly passive and harmless, making her an excellent target to walk on without consequence. Gentle in nature, she takes care of others when able in a variety of ways, even if her efforts are not immediately recognized; she's also anti-violence, and despite her demure composure, she steps up to people bullying others if need be (when the target is herself it's a whole different ball game, of course). She feels like it's her civil duty to ensure people don't harm each other, stemming from the disappearance of her sister at a young age. She doesn't want others to endure what the Clarke family did.
She works best as a cog in the machine rather than standing out on her own - despite her social awkwardness, she excels in school at group projects and people flock to her for them as a result. While she has the reputation for being 'out there', it couldn't be further from the truth - she's actually very down to earth and logical-minded, her reasoning and micromanaging skills being a saving grace for these projects most of the time; that, and the fact she's very good with her hands. With her resourcefulness backing her up, she's made a bit of a name for herself when it comes to teamwork in school.
MJ is quite solitary in nature, at least when it comes to living humans. She has a mild, unconscious fear of strangers out of the general agreement amongst family members that Vivian was kidnapped, and so she prefers to talk to ghosts since they can't harm her either way. This was made possible due to her father's position as the local graveyard keeper, and she spends a lot of time in the premises as a result, having made friends to the few that refused to pass on. They seem to urge her to get along with others, but most of the time she's too awkward to succeed of her own volition.
She is quite lacking in self confidence and very quiet, which in turn widens the gaping wound that is her social anxiety. She's never had any parental examples to follow, given that her mother passed away and her father was buried in work; other than her older sister, she's never had a soul in this world to boost her ego, and as a result she's of the belief she's someone whom should be looked over rather than looked at. This feeds the never ending cycle that continuously has her withdraw from company and either indulge in her solo hobbies or with creatures that can't speak, or ghosts.
MJ stands at a very comfortable 168 cm. Much like her mother, she has blonde hair down to her chest and blue eyes. Her mane is often found in a ponytail for the sake of practicality. Having never been taught how to use makeup, she doesn't really care for it; not that she actually cares much for her appearance to begin with, past what's healthy for her. Her face is very expressive and it's easy to tell what she's feeling from just looking at it as she doesn't have the mental tools to keep herself from showing particular emotions. While her hands are rough and calloused, she has a surprisingly clear skin everywhere else.
She is quite fit for someone not engaged in any recurring sport - this is due to her solo adventures in the Murrigal Bushland, having taken up survivalism as a hobby instead. This honed her compact physique, and as a result she's considerably heavier than what her seemingly slender frame would have you think. And for someone who spends so much time outdoors, she is surprisingly pale, indicating she takes good care of her own skin - a bit of a necessity, or else the sun would have boiled her skin a long time ago.
Due to the family's tight budgeting, she can most commonly be found wearing her uniform; when out in the woods, however, she always has old clothes on her that she doesn't mind having torn up (and most of which are, to an extent or another). She prefers shorts to skirts for movement, but wears pants at school instead.
Mary Joselyn Clarke was the second born of a grand total of four little tykes brought to the world by Maxwell, a Muggle, and Janelle Clarke, a magical wildlife keeper. She followed her oldest sister with roughly a two year difference, and was subsequently followed herself by fraternal twins Justice and Vivian just a few years later. Unfortunately, the family's happiness wasn't meant to fully flourish - unfortunately, Janelle perished shortly after giving birth to the twins after a prolonged coma, her body unable to withstand the strain it was forced to endure. Maxwell, a graveyard keeper, was forced to care for and nurture his family on a low salary ever since, as neither his parents nor Janelle's ever offered to help with the children
Maxwell's efforts seemed to pay off for a time - the children never lacked a thing despite the very tight budget, and fortunately they were all too young to remember the misfortune that had befallen them, so they were able to transition into their new lives without much trouble. Due to a lack of knowledge of the wizarding world in general, he enrolled his children in Muggle schools through Elementary education. It was here that Mary first got a taste of the ostracization that haunted her for the remainder of her Muggle academic career: it turns out being the child of the graveyard keeper automatically granted her the label of 'spooky', 'creepy', 'lunatic', among other things. The fact she was shy and soft-spoken didn't help her case, and thus she remained a very lonely child throughout that entire painful process.
A second turn of the worse expected the Clarke family around the corner: the less than ideal school ultimately cost them something very dear to them, in the form of Vivian's presence. The girl disappeared from school premises one day, never to be found. This affected the whole family, in particular Maxwell and Justice. Maxwell became overprotective of his children ever since and very present in their lives; Justice didn't seem to take so well to losing his twin, and while he remained on friendly terms with Mary, it hasn't been the same since despite the years going by.
Enraged with the event, Maxwell pulled his children from the school. It was perhaps a happy coincidence that his oldest child, Aspen, had just entered Tallygarunga to pursue an education in magic - she informed him of the existence of the Whitlam Bilby ward. Without thinking twice, he enrolled the two remaining kids in it. Mary finally got to experience the magical world, even if it was through loss - and with the exposure, she was finally able to start to read and understand the various books and notes their mother left behind before passing away, most of which pertaining to magical creatures and local flora, as well as survivalist skills. She became very attached to this treasure trove of information, as it was her way of being connected to the mother she never met. Seeking to do the same with her lost sister, MJ also took the pawn shop guitar their father had gotten her for the last birthday they enjoyed together. She's been playing it since by herself, and has become very proficient in it.
While nobody seemed to ostracize her that heavily in her years in Tallygarunga - the very campus had ghosts after all, it wasn't like she was out of place - it seemed that both the social exclusion and the disappearance of her sister had left a lasting mark. MJ was the quiet sort and never had any friends, and her reputation as a weird kid seemed to follow her even if she did nothing to gather attention on herself. She'd really like a friend or two, but she has no idea where to begin...