The traditional symbolism of that character, such as what it’s known for, its typical characteristics, context, actions, and role (such as a leprechaun representing luck).
Its primary characteristic (such as a unicorn’s peacefulness or Ares’ combativeness).
Consider also what stood out about it in the dream, and your feelings about it.
See also: Character; Mermaid; Dragon; Werewolf; Vampire; Monster; Mythological Place