As a team, Delilah and Julius are both gifted musicians, masters of disguise, martial arts experts and fluent in 20 languages. Still, they are both consummate professionals always seeking to improve their game. They seem to like each other, too. Delilah and Julius have had many "dates" like missions.
Delilah Devonshire has a very determined personality and is eager for truth. In fact, Delilah's greatest quality is her commitment to truth. It's also what gets her into trouble. She takes things seriously but she can break down easily in certain situations. Her spy parents went missing when she was only five and are presumed dead. Delilah refuses to believe this, however, and she is determined to find out anything she can about them and to prove the rumors wrong that her parents were double agents. Delilah's relationship with Julius is very important to her and she's very touchy and gets jealous when Julius flirts with other girls(especially Ice). She appreciates having a capable partner in Julius, and together they will stop at nothing to keep the villains from carrying out their evil plots on mankind. She believes in breaking her opponent down from the inside out. She gets inside the villain's head and she loves a new challenge. Delilah is strong-willed, inventive, resourceful, quick thinking and graceful. She is experienced in fencing, etiquette and explosives, and always has time to learn something new that may be useful on a mission.
Julius Chevalier is often flippant but is very determined and has a passion for crime fighting. Where Delilah is more goal-oriented, Julius is more spontaneous. He deals with situations as they happen and still manages to find the time to have fun. He enjoys surfing, poetry, safe cracking and yoga. His parents were killed in action when he was only four, and Julius would love to avenge their deaths. For now, he is comforted by the fact that they were considered two of the greatest spies of all time. Julius is a laid back guy and a little cocky. This confidence allows him to act on the fly. He has a dash of James Bond in that he is not easily ruffled, thinks fast, and makes it all look easy. He has a good sense of humor and is very intuitive when it comes to the needs of his partner, Delilah. Beneath a nonchalant, arrogant exterior lies a sensitive and caring guy – especially towards Delilah. He is calm and resourceful under pressure, but tends to be a bit careless when the pressure is off. He often tries to impress Delilah, and becomes extremely jealous and petty when she shows interest in other boys. It is proved in one episode that he is in love with Delilah as it is shown what he is dreaming about.
!The Academy Crew
The director of the Academy, Al is always highly informed and gives Delilah and Julius their mission assignments. Al's not only their primary contact, guide and teacher, but he's also a parental figure for Delilah and Julius. A free spirited individual, Al talks like a mid-70's Californian surfer/hippie. He is passionate for food and culture and has a unique sense of humour, but can also be serious, especially when it comes to keeping his students safe.
Scarlett is the Academy's gadget guru. Like Al, Scarlett is prone to using anachronistic 70's expressions as well as cares a lot about her students. She's extremely inventive and always coming up with new spy technology that keep Delilah and Julius on top of their missions
A frequent partner of Delilah and Julius, he is a well-meaning, good-hearted goof with a reputation for being a stink magnet. It's not that he's naturally stinky, he is just inevitably drawn into very smelly situations on his missions. Nosey seems to be attracted to Zoe, a new member of the Academy.
!!Ursula and Emmet
Another one of Al's arranged spy teams, Ursula and Emmet are the rivals of Delilah and Julius who are jealous of their popularity and success. Ursula is also a double agent working under cover at the Academy for an unknown evil foe. Supposedly Dr. Dismay.
!! Zoe Ling
Zoe is the newest spy at the Academy. She loves reading comics and knows them all by heart. When Zoe first arrives at the Academy, she thinks Julius is cute. However, a relationship with Nosey is hinted throughout a few episodes. Zoe is a redhead and has a rather feisty personality which is the stereo typical attitude most redheads have. Her spy skills are well-developed and the Academy Crew seems to trust this newcomer.
Dr. Dismay is a young, handsome scientist bent on world domination who tries hard to break the stereotypical mold of a mad scientist.
An evil genius and father of Dr. Dismay.
!!Dexter Jeremy Hook "DJ Hook"
An internationally-known DJ who can hypnotize people with his music.
The leader of a crime syndicate specializing in cybercrime.
A master manipulator of earth science who also has her eyes on Julius.
A young socialite who uses her money to try to take over the world.
A master of disguise, he is behind some of the biggest scams ever committed against humanity. Nobody has ever seen his real face, not even any of his many kidnapping victims.Delilah and Julius uncovered his face, but instead of having a face the conman wore a permanent mask.
A volatile weatherman who really controls the weather.
A mutant who hates normal-looking people. He is also the leader of a group of freaks masquerading as a circus, where he is the "Clown Prince."
Although a member of the academy, she is working as a double agent.
He is after the zero list and is also Julius' brother.
Ice's twin sister and a villain with a fiery attitude
!!Dollface and Roy
A woman who is part-robot, part-human, and wants to take over the world with her "husband", full-time robot, Roy. She wants the entire world to be of robots, and no humans at all.
!!Evil Eye and Francis
Evil eye lost his eye while trying to escape from the police, and he believes that he lost it because of Delilah. Francis is his sidekick.