A 13-year-old student council president and school paper editor at Culeco Academy, known for her strong personality and leadership skills, who becomes an important friend to Sal.

A 13-year-old aspiring dancer at Culeco Academy who initially bullies Sal but gradually forms a friendship with him, and faces challenges at home.

Sal's father, a calamity physicist, who provides support and guidance to Sal as he deals with his extraordinary abilities and personal challenges.

Sal's American stepmother and a supportive figure, who embraces Cuban traditions and plays an important role in Sal's life, helping him cope with his powers and family dynamics.

Gabi's mother, an advice columnist who is a nurturing presence for her family, providing strength and support despite the stresses of dealing with her son's health issues.

Gabi's one-month-old brother, who acts as a motivating factor for Sal and Gabi's exploration of the multiverse due to his critical health condition.

The formidable yet compassionate principal of Culeco Academy, who demonstrates fairness and genuine concern for the students, especially when dealing with Yasmany and Sal.

A renowned cosplay designer and textile arts teacher at Culeco Academy, who encourages students to unleash their creativity.

A health teacher at Culeco Academy who focuses on the growth of his students and is willing to acknowledge and correct his mistakes.

The chief learning coordinator at Culeco Academy, who transforms detention into a supportive study hall to assist students.

The theater teacher at Culeco Academy who inspires students by affirming their talents and motivating them to achieve their best work.

The chief custodian at Culeco Academy who supports students with guidance alongside maintaining the school's cleanliness.

A student at Culeco Academy who exhibits prejudice towards Sal after the "chicken incident," demonstrating themes of misunderstanding and rejection.

A supportive friend to Sal at Culeco Academy who may have romantic feelings for him, known for playful pranks and providing assistance when needed.

A compassionate and hardworking nurse who sees through Sal's magical tricks and bridges the connection between the Reál and Vidón families.