Friendship

Friendship is one of the core themes that drives all of the novels by Rick Riordan. In this novel, the reader sees friendships tested, strengthened, and created. For example, at the beginning when Percy and Jason find themselves faced with battling some giants, they both are having fun doing it. Percy stops to acknowledge that Jason is just like him and thinks the same way that he does on a lot of things.

The reader sees friendships that have already been established grow stronger, be tested, and reconciliations occur. The reader sees this when Frank and Leo are being held by the fish centaurs and Leo explains to Frank why he and Hazel and been holding hands. They share additional information with one another about their mothers and find out that they have a lot in common.

Additionally, the demigod's friendship is used against them by...