You can name and imagine your character however you wish.
Player Characters
Your character is often referred to as a "player character" or PC, rather than a GM controlled character "GMC".
You have control of your character, and you define your character's personality and motivations, and choose their capabilities based on your class and level.
Character Growth
As you make choices, face adversity and discovery, your character will change over the course of the game. But this growth is always rooted in the decisions you make. Allow room for this when you are creating a character - you start at the beginning and the journey is the story.
Emergent Personality
As your character faces challenges with their companions by their side, your character will form emergent personality traits. Kissed a frog and it blew up? More cautious. Drank from a magical font and gained a permanent power? Less cautious. Trust, courage, and a dozen dozen other traits will come. Let your character be formed and defined by the decisions, actions, and outcomes that they face.
Complete Freedom
You choose everything about your character: Species, sex, orientation, height, weight, build, physical attributes, right down to eye color, and the colour and cut of your clothes.
There are no incorrect or wrong choices; the peoples of the severed kingdom are a miraculous blend of every shape and form, and live together in mutual acceptance of one another allied to their home city state.
Playing With Others
Remember: You are playing with others collaboratively. You can be edgy, or dark, or even an asshole, but your group is on your side. Be on theirs.