Theta's origins are unknown even to themselves. Awakening in ancient ruins is perhaps their earliest memory. Since Theta's very creation, whatever made them also granted the automaton with control over Time. An ability which is as much a blessing as it is a curse.
Theta spent a few years locked away in those ruins. They had spent those years learning from crumbling murals and torn books, slowly growing their innate talent into something more. Eventually, though, Theta left their birthplace in search of answers. Who made them and why? These questions lingered in their mind, but as they wandered throughout the Old World they never found their answers.
Their talents no longer evolved - they became stuck as they were. That felt wrong to the automaton. Theta saw no way to fix this other than by leaving for the fabled New World. They sensed it, they knew - this would change the trajectory of their life. For the better or for worse - it was not yet known. Even so, they braved on and joined the Guild, venturing through the portal into the new lands.