Kyle’s younger sister, who is interested in finances and serves as a catalyst for Kyle's responsibility and character development throughout the story.

The school bully and foil to Kyle, whose self-centered nature contrasts with Kyle's responsible and caring personality.

Parents to Kyle and BeeBee, who trust Kyle with responsibilities, such as babysitting his sister, and serve as a stable and communicative family influence.

An elderly couple who assist Kyle and BeeBee during a natural disaster, providing crucial support and guidance when faced with adversity.

The dog belonging to Norm and Josie, who provides warnings before natural events and offers emotional support.