Helen and Thomas are two vibrant siblings with thick, dark brown hair. Seven-year-old Helen has her father's piercing blue eyes, while six-year-old Thomas possesses gentle brown eyes. They wear wide, comfortable sailing trousers, well-fitted seaboots, and loose pastel shirts. A matching blue and silver neckerchief, representing their father's house, is always knotted neatly around their necks. They move with an synchronized agility that seems more like a dance than mere walking.

These children are gregarious and industrious. They have spent their short lives on naval ships, making them far more confident and professional than most children their age. They act as a single entity, often communicating through quick glances or identical smiles.

The children of Charlotte Williamson and Miguel Martinez, Thomas and Helen were practically born with sea salt in their veins. As their parents served in the navy, the siblings became beloved mascots and industrious cabin children on various vessels. They learned to navigate the high rigging and polish deck brass before they could even read. Their training in rapiers and knives was framed as a game of rhythmic synchronicity, leading to a unique combat style that blends courtly mobility with naval pragmatism. Recently, the pair has been sent inland to meet their Uncle Gareth for the first time. The transition from a rolling deck to a kindergarten classroom is a massive change, but they approach it with the same bravery they show during a storm. They carry their house colors proudly and are eager to impress the head teacher who shares their blood. They are rarely seen apart, moving as a two-person team in everything they do.