Final answer:
Athena serves as Mortimer's character foil in the story by contrasting with his traits and actions, highlighting his growth and development.
Step-by-step explanation:
Athena serves as Mortimer's character foil in the story by contrasting with his traits and actions. For example, Athena is portrayed as wise, courageous, and skilled in battle, while Mortimer is depicted as foolish, fearful, and inexperienced. This contrast highlights the stark differences between the two characters and emphasizes the growth and development that Mortimer undergoes throughout the story. One piece of evidence that supports this is when Athena fights the giant Alkyoneus, showing her bravery and strength, while Mortimer is often hesitant and unsure of himself. Overall, Athena's character foil role helps to highlight the themes of courage, wisdom, and personal growth in the story.