Main • Lucas "Luc" Maxwell (voiced by Mac Heywood in the pilot, Lyon Smith in the main series) – Theo's lazy and unintelligent best friend who uses the loop to indulge in endless mayhem with no regard for the consequences of his actions. • Theodore "Theo" Merton Jr. (voiced by
Bryn McAuley in the pilot, and Kevin Duhaney in the main series) – Luc's nerdy and responsible African-Canadian best friend who has great knowledge of the loop (in the episode "Monster Stink", he reveals that the time loop has lasted three years) and plays the
straight man to Luc.
Classmates • Jesse (voiced by Scott Gorman) – The flatulent and short-tempered school bully. His fondness for picking on other children is contrasted with his proud vegetarianism and love of nature and animals. • Gwyneth "Gwyn" Sanders (voiced by
Denise Oliver) – A bespectacled, pink-haired girl who has strong romantic feelings for Luc but despises Theo and is unable to remember his name. Despite this, Luc is disgusted by her while Theo is infatuated with her. • Sarah Doover (voiced by
Alyson Court) – An extremely popular girl who never speaks and communicates entirely through texting on her cellphone. She only speaks in the final episode, where it is revealed that she was saving her voice for an upcoming talent show. • Kelly and Kelli (voiced by
Stephanie Lynn Robinson) (pronounced "Kel-ee" and "Kel-iye") – Identical twin sisters who serve as Sarah's followers, issuing her commands and informing others of her moods, opinions, and actions. • Kyle Bush (voiced by Adam Cawley) – An extremely handsome, compassionate, and popular boy in the school who is perfect and flawless in every way. Luc hates him for this, and is always trying to outdo him. • Lester (voiced by Mark Edwards) – A nerd interested in video games and
LARP. He is always stuffed inside his locker by Jesse, and then intentionally spends the entire day there to play video games. • Amy (voiced by Stacey DePass) – A goth girl who hides in the school basement. • Jerry Rivers (voiced by
Sergio Di Zio) – The bespectacled reporter for Port Doover Elementary School, he hosts a news show that provides important and factual, if extremely boring, coverage of all the major events the school's students should know about. Every Monday, he reports on the tightening of a loose screw on the statue of Wilt Doover, the town's founder.
Adults • Principal Applecrab (voiced by
Darren Frost) – The frail and bespectacled principal of Port Doover Elementary School. Luc and Theo often trick him into performing painful or humiliating actions at the school assembly for their amusement. • Coach Lessard (voiced by
Seán Cullen) – Luc and Theo's morbidly obese gym teacher who gets around on a golf cart. It is revealed in the episode "Badmerton to the Bone" that his left arm is bionic. • Mr. LemonJello (voiced by Seán Cullen) – Luc and Theo's monotonous, apathetic science teacher. • Theo Merton Sr. – Theo's father. A former badminton champion who runs a sporting goods store. • Claire (voiced by
Athena Karkanis) – Luc's self-centered and incompetent teenage babysitter. As his parents are away on a three-day trip, she is Luc's guardian and has effectively replaced them due to the loop having started on the second day. • Wilt Doover • Tinna Lokinse (voiced by Anna Louch) (pronounced "luk-ence")- Luc's lazy math teacher who always falls asleep while teaching so the kids just go crazy. ==Episodes==