Vladimir Propp analyzed Russian folk tales and identified 8 character types that commonly appeared:
The Villain works against the Hero. In the document's book, the Villain is Spider who deceives the young Hero.
The Helper assists the Hero on their quests, like Donkey in Shrek or Chewbacca in Star Wars. In the book, no Helper is mentioned.
The Princess or prize is what the Hero wants, but the Villain may have taken her. The book's Hero is a young girl seeking to succeed against Spider by the end.