Will Stronghold has a personality that shifts from an anxious and timid teen into a confident, loyal leader. Early Personality (Before Powers) • Anxious and Timid: He feels intense pressure living up to his parents (The Commander and Jetstream) and panics about not manifesting any superpowers. • Kind and Protective: Despite lacking powers and being placed in "Hero Support" (sidekick class), he stands up for his friends when they are bullied. • Gullible and Insecure: He is easily swayed by popular crowds and initial attention, momentarily losing touch with his real friends. Later Personality (After Powers Emerge) • Brave and Loyal: Once he unlocks his super-strength and flight, he uses his abilities to protect his peers rather than ego. • Open and Grounded: He rejects elitist divides between "Heroes" and "Sidekicks," ultimately valuing true friendship and inner courage over flashiness.

Ethan Bank is an upbeat, intelligent, and fanboyish freshman who acts as the loyal intellect of Will Stronghold's friend group. Core Personality Traits • Upbeat and Enthusiastic: He has a bright, positive attitude when hanging out with his friends and genuinely loves superhero culture. • Intelligent and Creative: Recognized as the brains of the group, he approaches his defensive power with resourcefulness and adaptability rather than raw force. • Sensitive to Labels: He strongly dislikes the term "Sidekick" and prefers to rebrand the classification as "Hero Support". • Stammers Under Pressure: When startled, cornered, or stressed, he tends to stammer and offer overly optimistic remarks—such as melting into a liquid puddle when faced with the intimidating Warren Peace. • Frequent Target of Bullies: Because of his modest liquid-melting ability (mocked as "Popsicle" by Coach Boomer), he is frequently targeted by senior bullies like Lash and Speed.

Warren Peace is an anti-hero whose tough, rebellious exterior hides a grounded, principled, and loyal character. Core Personality Traits • Defiant and Misunderstood: He projects a "bad boy" image with dark clothing, a leather jacket, and a brooding look, which initially causes people to assume he is a troublemaker. • Introverted/Anti-Social over Malicious: Rather than actively seeking out fights or bullying others, he generally prefers to be left alone and minds his own business. • Temperamental (Initially): He starts out hot-tempered, arrogant, and hostile—fueled heavily by a desire for revenge against Will Stronghold because Will's father (The Commander) imprisoned Warren's supervillain father (Barron Battle). • Heroic and Protective: Despite his villainous lineage, he has a strong moral core inherited from his superhero mother. He steps up to protect others, helps defeat the villain Royal Pain, and matures into a brave, kind, and reliable friend. • Hardworking: Outside of school, he works humbly as a busboy at the Paper Lantern restaurant and even speaks Chinese

Layla Williams is the sweet kind and Compassionate. • Kind and Compassionate: She deeply loves nature, the environment, and humanity. She is a dedicated vegetarian, likely influenced by her mother's ability to communicate with animals. • Righteous and Principled: She possesses a strong moral compass and stands up for what she believes is right. This is best shown when she refuses to cooperate with the school's "Hero vs. Sidekick" placement system and chooses the Sidekick track on her own terms. • Cautious with Power: Although she has powerful florakinetic and chlorokinetic abilities (the power to control and manipulate plant life), she is restrained and practical, preferring to use her powers only when a situation truly demands it rather than for show or aggression. • Optimistic yet Reserved in Romance: She is generally optimistic and a loyal, lifelong best friend to Will Stronghold. However, she is initially shy about her romantic feelings for him, keeping them secret until outside events force the issue.

Zach Braun (also known as "Zach Attack,") has an exuberant, confident, loyal, and spacey personality • Arrogant Façade & Insecurity: He puts on a big, cocky, and talkative front to hide his internal insecurities and vulnerability, especially when facing bullies. • Exuberant & Playful: He is energetic, youthful, and sweet, often acting as the unintended comic relief of the group. • Loyal Friend: He is a dedicated and honest best friend to Will Stronghold and stands by his peers. • Romantic & Earnest: He is devoted to impressing Magenta, eventually becoming a power couple with her by the end of the film