On Star Trek: Vanguard, a character is measured by his traits. They describe what the character can and cannot do — lift a heavy cargo container, run faster than a charging sehlat, plot a course to Earth. They help you to quantify your character's strengths and weaknesses. Traits also allow a character to "plug into" the rules; to determine whether an action succeeds requires a skill value and an attribute, for example.

Generally, Traits come from the Template and Overlay you choose during character creation. But this is only the beginning for your character. The real "creation" comes during game play, as you breathe life into your character through your characterization.

There are four kinds of Traits on Star Trek: Vanguard: Attributes, Skills, Advantages and Disadvantages.