A Character's Backstory is the result of their Sophont, Provenance, Banner, and Mantle. A Player creates their Character's Backstory during creation.
Your Sophont represents the unique features of your physiology. It confers your starting Attributes and, typically, a starting ability or two.
A Provenance is the backdrop of a character's upbringing. It contextualizes their outlook on life, and their approach to overcoming obstacles, by revealing the circumstances of their upbringing.
A Banner is a sociopolitical power, ranging from gangs in a city to intergalactic powers, and represents the society and norms enclosed within.
Your Mantle represents how you succeed or survive in the world. Mantles are a reflection of a character's capability and a player's playstyle, and marry them together.