Megan Walsh / Agent 83
A young secret agent who fakes her own death so she can have a normal high-school experience.
- The Ace: Megan is the very best of all the agents in Prescott Special School for Orphans.
- Action Girl: Megan is one of the best agents around.
- Fish out of Water: Despite all her research, Megan is really out of her depth in high school.
- Foreign Exchange Student: she pretends to be one from Regina, Canada.
- I Just Want to Be Normal: Megans motivation to fake her own death and enroll in high school.
- Teen Superspy
- You Are Number 6: Hardman refers to Megan only as Agent 83.
Heather / Agent 84
Megans fellow secret agent.
- Action Girl: Shes a badass agent. She later becomes a Dark Action Girl.
- Always Second Best: As good as she is, Megan is always better.
- Big Bad Duumvirate: She overall answers to/works with Victoria, but has her own goals and plans in mind. The post-credits scene sets her up as the possible next film's Big Bad.
- Dragon Ascendant: More like henchmen ascendant, as its unclear whether she's actually The Dragon to Victoria. The post-credits scene shows that she is now in charge of her own henchmen (possibly Victoria's) and has sort of replaced Victoria.
- Evil Redhead: After her FaceHeel Turn.
- FaceHeel Turn: She's always had a rivalry with Megan/83 but she turns full on evil half way through and becomes a double agent.
- Foil: Very much to Heather.
- You Are Number 6: Hardman refers to her only as Agent 84.
The man in charge of Prescott Special School for Orphans, that turns little girls into lethal assassins.
The girl whose family takes Megan in thinking shes a Canadian exchange student.
An international arms dealer captured by Megan.
- Arms Dealer: Her profession and the reason Megan is sent after her.
- Big Bad: The movie's main antagonist.
- Big Bad Duumvirate: Sort of with Heather. She's clearly the one in charge, but Heather has her own goals and plans against Megan. Heather is also the one who helps her escape.
- Dark Action Girl: She can hold her own with trained assassins.
- Evil Genius: She has an IQ of 140.
An AV kid in Megans high school.