•
Corey Sevier as Hart Greyson – Age 15, smart, athletic, and funny. When he is told upon his graduation that a genetic flaw has made him unsuitable for a medical career and is assigned to an extremely dangerous job in bio tech, Hart begins an investigation into the operations of Nexes and joins the Storm, a rebel group trying to cure P.A.S. and destroy Nexes. •
Jessica Lucas as Jakki Kaan – Age 15, free spirit, fearless and bright. Jakki is a member of the Storm and also one of the first long-term contacts that Hart makes. She is in the fight for several reasons, but mostly to find her lover, Dax, another of the people that Nexes has made an effort to eliminate. •
Curtis Harrison as Zeus – Age 19, technical genius who takes up leadership of the storm after blaming himself for a failed mission. Shares a mysterious past with Dr. Rich. •
Tatiana Maslany as Rome Greyson – Age 12, hip, open-minded, a whiz with the computer. Rome is Hart's younger sister, is a genetics genius and also very talented with computer operations. She becomes a strong ally in Hart's quest to discover the truth. •
Neil Denis as Robby Drake – Age 15, Hart's best friend. •
Elyse Levesque as Dr. Maxine Rich – Age 19, all charm on the outside, she is as hard as steel on the inside. She is smart, savvy, and shrewd. As a leading member of Nexes, she is not to be trusted and serves as the main antagonist of the series. • Skye Kneller as Quixote – Age unknown, a girl who looks to be 12. Often comes to the aid of Hart, seemingly possessing magical powers with the ability to disappear at will and disable securities with the wave of a hand. Although seemingly benevolent, Quixote's motives are dubious at best, and she sometimes shows a sadistic side. She ends the series, enigmatically saying, after being rejoined by another Quixote: "One Quixote, two Quixote, three Quixote, four, and more, and more. We're taking over" to which Zeus replies "I have a bad feeling about this". ==Episodes==