Question:
A watcher is a simple type of servant spirit. Some experts consider watchers to be a tangible expression of the magician's own consciousness, molded from the fabric of astral space.
Assuming that this is true, and that your character could, indeed, summon a watcher spirit, what would it look like? What would it sound like? What idiosyncrasies would it have that would set it apart from other people's watcher spirits?Answer:
It would probably look vaguely like a small Chinese dragon or winged serpent, depending on what light you looked at it in. It would be a bit lower pitched and slower than the stereotypical high-pitched, hyper watcher, but just as excited to please. As far as idiosyncrasies, I'd say that it would probably speak Portuguese with a strong Sao Paulo accent and tend to utter the Portuguese equivalent of "ummm..." a whole lot.
(I don't really know if spirits use languages per say, but that sounded good to me.)