- Otto Malpense - The main character of the series, a white-haired English boy who was raised in an orphanage. At H.I.V.E., he discovered the ability to interface telepathically with computer networks, which is due to a supercomputer implanted into his brain by Overlord in order to make Otto the perfect replacement body. Although Otto's ability to communicate with computers is very useful when searching for information, it leaves him vulnerable to possession by Overlord and other artificial intelligences like Animus, although the supercomputer allowed him a refuge from which to regain control of his body. In Aftershock, Otto was expelled from H.I.V.E. because he had unknowingly been part of a plan which led to the murder of fifteen Alpha students and the kidnapping of the rest of them (apart from himself, Wing, Shelby and Franz).
- Wing Fanchu - A tall Asian boy who is Otto's best friend. His parents, Wu Zhang and Xiu Mei Chen, were G.L.O.V.E. operatives in hiding after the failure of the Overlord project. After his mother's death, he was enrolled at H.I.V.E. by his fathers request. He is very loyal to his friends and protects them in times of danger, but he is often teased for lacking a sense of humour. He refuses to kill his enemies because he promised his mother he would never take a life. Wing had a difficult relationship with his father, who became the villain Cypher in Overlord Protocol, and who he believed to be dead on more than one occasion. In the Overlord Protocol, Cypher fell from a high-up walkway and Wing thought he'd killed him, but, his father reappeared in Rogue, but Wing greeted him only with anger and eventually shot him after he tried to kill Otto, leaving him definitely dead this time.
- Laura Brand - A Scottish girl who is an expert computer hacker. She was sent to H.I.V.E. after hacking into a military airbase to spy on a school friend's conversations. She is close friends with her roommate Shelby and enjoys discussing computers with Otto, who it is hinted she has a romantic attraction to. In Aftershock, this attraction was proven to be true. In Aftershock, she was forced by Chief Dekker (who was actually a member of the Disciples) to find out the location of the Hunt, or she would get the Disciples to kill Laura’s family. Laura did what she was told and got the location of the Hunt for Dekker, which led to the murder of fifteen Alpha students and the kidnapping of the rest of them (apart from Otto, Wing, Shelby and Franz). Laura joined the kidnapped Alpha students in the Glasshouse
- Shelby Trinity - A wealthy American girl who joined H.I.V.E. after gaining fame as the jewel thief "The Wraith". She is good at martial arts, but her area of expertise is stealth and lock-picking. She is the most talkative and adventurous of the group, and it is sometimes hinted that she has romantic feelings for Wing. In Zero Hour, she started a romantic relationship with Wing. She is very sarcastic and tries to make light of any situation the group find themselves in. Her greatest fear is being locked up - probably from being 'The Wraith'.
- Nigel Darkdoom - Son of the infamous Diabolus Darkdoom. He is reluctant to follow in his father's footsteps, particularly as he believes his father is dead until Escape Velocity. He excels at Hydroponics, and in the first book inadvertently creates a monster plant named "Violet" which attacks the school. Although he is sometimes considered weak, he insists on helping the others in times of danger. He is best friends with Franz and the pair of them are often bullied by Block and Tackle.
- Franz Argentblum - Son of a German chocolate magnate and villain. English is not his first language and his grammar is often unusual. He is described as very overweight, and constantly thinking about food. He is close friends with Nigel. Often in the series, apart from the first book, he reminds the his friends about his heroics in saving the school in Overlord Protocol, where he apprehends Colonel Francisco before a bomb attached to the energy generator, transferring the power from the active volcano, blows up.
- Tom Ransom – A student at H.I.V.E. who arrived at the beginning of Aftershock. He is an orphan who went to the same orphanage as Otto and is mentioned in book 1 to steal things for him. After Otto left the orphanage, he and his friend Penny started their own wealth redistribution program (nicknamed “the Hoods” after Robin Hood) until they came to H.I.V.E. in Aftershock and they joined the Alpha stream. He and Penny are captured by the Disciples and taken to the Glasshouse.
- Penny Richards - A student at H.I.V.E. who arrived at the beginning of Aftershock. She is an orphan who went to the same orphanage as Otto and is mentioned in book 1 to steal things for him. After Otto left the orphanage, she and her friend Tom started their own wealth redistribution program (nicknamed “the Hoods” after Robin Hood) until they came to H.I.V.E. in Aftershock and they joined the Alpha stream. She and Tom are captured by the Disciples and taken to the Glasshouse.
- Viscontessa Lucia Sinestre a.k.a. Lucy Dexter - A new student at H.I.V.E. who arrived at the beginning of Dreadnought and was placed in the same Alpha stream class as the others. She quickly befriended the group, particularly Laura and Shelby, but she was initially sceptical of their tales of past adventures. She was the granddaughter of the Contessa, and shared her ability to control others with her voice, although she could only control a few people at once. In Zero hour she started a romantic relationship with Otto, but later in the book she was shot by Furan who was being controlled by Overlord and she was eaten by the Animus nanites along with Furan and Overlord. Otto refused to leave her to die but she used her voice powers to force him to leave and save himself.
- Block and Tackle - Two students from the Henchman stream who repeatedly bully the Alphas, particularly Nigel and Franz.
- Cole Harrington – A fifth-year Politics and Finance stream student who attempted to forcefully take H.I.V.E. mind’s source code from Otto (only minutes after Otto had stolen it himself) and sell it on the black market. Otto managed to frame Harrington so it looked like he had stolen the code, and he was locked in the brig at H.I.V.E. He was later killed by Chief Dekker (who was actually working for the Disciples) in her attempt to make it look like he had committed suicide.
Famous quotes containing the words students and/or hive:
“It is, all in all, a historic error to believe that the master makes the school; the students make it!”
—Robert Musil (18801942)
“I will arise and go now, and go to Innisfree,
And a small cabin build there, of clay and wattles made:
Nine bean-rows will I have there, a hive for the honey-bee,
And live alone in the bee-loud glade.”
—William Butler Yeats (18651939)