Scooby-Doo and the Ghoul School

Scooby-Doo, the loyal Great Dane, stumbles into the chaos of Grimwood, accidentally swallowing a remote that gives the Grimwood girls control of the volleyball match. He supplies comic relief while proving braver than his fear suggests, and becomes a key ally in the effort to thwart Revolta. Throughout the adventure, Scooby's teamwork and instinct help guide the group toward safety.

Shaggy is Scooby's best friend, and though easily scared, his loyalty and resourcefulness surface when the team faces danger. Temporarily hypnotized during a field trip, he nonetheless contributes to the group's escape and eventual plan to outwit Revolta. His humor softens tense moments while he proves capable when it matters most.

Sibella is one of Miss Grimwood's students—the daughter of Count Dracula—who embodies the school’s blend of danger and charm. She and her peers show courage, cleverness, and camaraderie as they confront the witches' threat. Sibella helps keep morale high and bridges friendships across monster and human groups.

Elsa is the daughter of Frankenstein Senior, a resourceful member of the Grimwood clan who helps rescue Cadet Jamaal and others from danger. She demonstrates leadership, teamwork, and protecting those she cares about. Elsa's practical knowledge and bravery drive key moments in the battle against Revolta.

Revolta is the power-hungry witch who aims to kidnap the Grimwood girls and bend them to her will. She commands dark magic, uses potions and witches' tricks to sow chaos, and leads a looming castle showdown. Her plans catalyze the protagonists' resolve and test their unity.

Tanis is a mummy daughter among the Grimwood students who contributes to the school's defensive forces. She adds humor and resilience, fitting into the ensemble that saves the day. Her presence underscores the theme of diverse monster backgrounds pairing with modern bravery.

Cadet Jamaal is a Calloway Military Academy cadet who joins the volleyball match against Grimwood and ends up relying on his newfound allies. He is rescued from a perilous quicksand trap and becomes part of the broader rescue mission. His growth mirrors the film's message about teamwork across unlikely circles.

Winnie Werewolf is one of the Grimwood girls—daughter of the Wolfman—who participates in the school's mischief, sports, and defense. She represents the playful side of the monster family while contributing courage and loyalty to the group.

Matches is the little dragon under the care of a friendly dragon keeper who helps in various campus adventures. The dragon's presence adds magic and whimsy to the school, and it plays a role in overcoming obstacles during rescue sequences.