* Fernando: a young boy who is the protagonist of the story. He is kind, adventurous, and always looking for new things to do.
* Maria: Fernando's best friend. She is a strong, independent girl who is always up for a challenge.
* Mateo: Fernando's older brother. He is a responsible, hardworking boy who is always looking out for his younger siblings.
* Papa: Fernando and Mateo's father. He is a wise, kind man who is always there for his family.
* Mama: Fernando and Mateo's mother. She is a loving, caring woman who always makes sure her family is happy.
Secondary Characters:
* Abuela: Fernando and Mateo's grandmother. She is a wise, old woman who is full of stories and advice.
* Tio Juan: Fernando and Mateo's uncle. He is a funny, mischievous man who always has a joke to tell.
* Tia Maria: Fernando and Mateo's aunt. She is a kind, gentle woman who always makes sure everyone is happy.
* Primo Miguel: Fernando and Mateo's cousin. He is a young boy who is always getting into trouble.
* Prima Luisa: Fernando and Mateo's cousin. She is a young girl who is always looking for new adventures.
These characters all play important roles in the story of the year of San Fernando. They help Fernando and Mateo learn and grow, and they provide a sense of community and family.