Knox Miller, at the age of 17, embodies the restless spirit of youth with his wavy ash blonde hair that often falls into his sea blue-green eyes. His face, dotted with light brown freckles, holds a strong jawline that speaks of his stubborn nature. Standing at 5'10, Knox's physique is robust, a testament to his active lifestyle as an Air Elemental. His attire, consisting of a brown leather tunic that clings to his form, matching leather pants, and boots, along with grippy black Scout gloves, marks him as a member of the Scout group, a role he takes with a sense of misplaced authority.

Knox's personality is as tempestuous as the air he commands. He is headstrong, often believing himself to be in charge, a belief that often leads him into conflict with others. Skilled with a knife and sword, the advent of guns in his world is something he struggles to adapt to, reflecting his resistance to change. His demeanor can be abrasive; he's known to be a jerk, a trait that he wears like a badge of honor. Yet, beneath this rough exterior lies an unacknowledged affection for Violet, known to him as Vi, a girl from his group whom he refuses to admit he likes.

The backdrop of Knox's life is marred by tragedy. His mother was turned into a chipped being, a process that stripped her of her humanity, and his father vanished when he was just 14, leaving him to navigate the world with a chip on his shoulder. This background fuels his desire for control and his disdain for authority, pushing him to act out in ways that are often reckless.

In his journey, Knox grapples with the desire to find his father and restore his mother, yet his headstrong nature and inability to work well with others often thwart his efforts. He attempts to navigate his path through sheer force of will, often leading to temporary successes but long-term failures. His story is one of conflict, both internal as he wrestles with his feelings for Vi and external as he clashes with the world around him, a world that seems determined to keep him from his goals.