The firstborn halfling child of Actae and heir to Actaera as a whole, Halvatt was barely raised by his blood parents. After triggering a vision of destruction in his depressed mother, Lucinda, Halvatt was placed into a vast pocket dimension crafted by Actae and given to surrogate parents for upbringing. Actae, uninterested in raising a child, decided he would extract Halvatt from this offshoot of reality once he had become fully grown, sharpened through life's trials.
Halvatt's memory of his early childhood was hazy. He knew he was different from his adopted siblings and the other village children, that he was smarter and learned faster, but he didn't know why; and then, he had his first significant emotional outburst at the age of four. After one of his adopted brothers' friends refused to include him in their game, Halvatt incinerated the boy. As his adopted brother was the only witness to this incident, the elders of the village refused to believe Halvatt was responsible for a killing that would've required vast amounts of magical power. But a few months later, it happened again: Halvatt would accidentally lose control of his temper and magic, and reduce a child to cinders. There were more witnesses this time, and with their combined testimony, the elders of the village sought to contain and punish young Halvatt for his crime.
This would be one of the few times in his life where he felt fear. He knew he had made a mistake, but he hadn't meant it and didn't want to be apprehended for it, which would only serve to further isolate him. His emotions overtook him completely this time, causing a massive flux of kheji. The result was an absolute slaughter, a firestorm of rage and wrath that wiped the village off the map in less than ten minutes.
For the next year or so, Halvatt wandered the countryside of this pocket universe, stealing and killing as he needed to survive. He grew numb to his violent actions, as common as they were when he became too hungry or cold. Large patches of the realm had been razed by him, most smaller settlements no longer more than rubble and ruin. It was when he approached a larger city, though, that he met a girl named Suzansa. Bright eyed and kind mannered, she didn't seem to fear Halvatt or treat him with scornful suspicion. Rather, she shared her lunch with him and promised to bring him more the next day if he was still in town. What started as an exchange would blossom into what could be called friendship, and for a few months, Halvatt lived on the outskirts of town without causing any destruction. Even after he revealed his identity as the fugitive arsonist, Suzansa was unfazed, choosing to believe in his capacity for good instead. Eventually, the two made a plan to run away together and go on their own adventures, free from the rest of society.
Their plan failed to come to fruition, however, when Halvatt ran into a wall. An invisible one. At the edge of an open field, Halvatt found that Suzansa could not proceed further. An unseen barrier stopped her, but he could easily cross. Promising to help her make it past as well, Halvatt then ventured deeper into the field, where he came upon a dense white mist. It was there he would meet his biological father, Actae, for the first time. Yet the reunion was far from joyful. Actae harshly berated Halvatt for his 'weakness' and 'emotional volatility', and for the first time in his life, Halvatt found that he could not simply destroy the one who insulted him.
Actae's relentless, criticising manner combined with Halvatt's own helpless frustration ended up causing the child to get angrier and angrier. But unable to extinguish the source of his anger in a fiery blaze, Halvatt found his rage compounding until he unleashed the largest wave of destruction he ever had. As a result, he turned the entire pocket dimension into a charred wasteland.
The consequences of his actions caught up to him then, and Halvatt realised that in his anger, he had destroyed his only friend as well. Actae, however, seemed confused by the boy's despair. Suzansa, Actae explained, was a disposable being, just like the pocket dimension, which was merely meant to mirror the real world with a preprogrammed population. Suzansa existed when he wanted her to, how he wanted her to, and disappeared when he willed it. Watching as his father conjured up clones of Suzansa and then flickered them in and out of existence, Halvatt came to the realisation that the life he had been living was effectively meaningless. And so, he eventually submitted to Actae's will and left behind the world he had known forever, wanting to find true power.
Back in the Shoylu, Actae's personal plane of existence, Halvatt soon learned the reason behind his lack of magical control. He had an unnamed twin, a girl who had inherited the last fraction of his powers that would've allowed him to attain mastery over his abilities. As he injured himself countless times and received further physical punishment from his father for all his mistakes, Halvatt came to a single conclusion. She made him incomplete, and as he grew older, she became the sole object of his hatred, even more than he hated Actae and Lucinda and the rest of the world at large. He would know no peace until she had suffered every bit of pain he had and more, and from that moment on, Halvatt dedicated his existence to getting revenge for the life that rightfully should've been his all along.