The Observer is a tall, vaguely humanoid eldritch entity, with a curvy female form. She has huge sagging breasts, a plump belly and wide hips. The Observer wanders from place to place, from world to world, able to easily move even in the vacuum of space.
She is generally benign, non-confrontational and easy to get along with. True to her title, she tends to play the role of an "impartial observer", using her academic knowledge in many fields to analyze events, environments, buildings and people.