A template for a specific person. For example, a merchant, a prince, a scientist--anyone who has an important role to play in your world.
Something the character has said.
Baba Yaga, also known as Mother of all Witches, or Little Grandmother, is an extraordinarily powerful Arch Fey. She lives in a magical hut that walks on giant chicken legs, she will gladly become the warlock patron of anyone foolish enough to make a deal with her.
She is known to have a fickle nature, being dangerously unpredictable, equally as likely to eat her worshippers and fellow hags as she is to aid them. Politeness will not guarantee her favor, nor will rudeness ensure incurring her wrath. She is will happily offer people some of her secrets in return for another. The bargains she offers are by far the most dangerously worded of any fey.
Description
Your character's physical description; things like eye color, hair color, hair style, physical mannerisms, distinguishing features, fitness, strengths, and weaknesses.
Traits and Motivations
What is their personality type? Are they funny? Do they have a temper? Are they motivated to protect a loved one? Do they have particular virtues? Bad habits? Any fears or phobias?
Routine
What does your character's normal day look like? What do they do? What do they think about?