The superintendent of the Hardcastle School District, initially portrayed as Donovan's determined antagonist, who is focused on maintaining order and discipline within the district.

A gifted student at the academy who longs for normal social experiences, her curiosity about Donovan’s ordinary life leads her to rethink her views on social norms.

A kind-hearted homeroom and robotics teacher at the academy who values Donovan’s unique contributions to the robotics team and classroom environment.

Possessing the highest IQ at the academy, he struggles with the expectations placed upon him due to his intelligence, seeking a balance between his gifted status and a desire to be a regular kid.

A math teacher at the academy who is skeptical of Donovan’s place among the gifted students and seeks to prove he doesn’t belong.

Donovan’s older sister, who lives with her parents while her husband is deployed; she initially doubts the academy students but grows to appreciate their qualities.

An ambitious academy student who is unimpressed with Donovan, believing his presence jeopardizes the academic excellence the school strives for.