Exo is the fourth novel in the "Jumper" series by Steven Gould and the fifth in the "Jumper" universe. The first two novels—Jumper and Reflex—tell a connecting story of David and Millie, which is continued with their daughter, Cent, in Impulse and now Exo; while the fifth novel, Jumper: Griffin's Story, is the back-story for a character from the 2008 movie Jumper and is not associated with the story or characters in the novels.
It seems that the ability to teleport or jump can be learned. David was the first one and just did it, but Millie and Cent did it under stress after being jumped lots of times. In the different sequels of the series the main characters discover different principles to their capabilities of jumping.
David Rice – Has the ability to "jump" instantaneously to any location that he can visualize accurately. He has always encouraged his daughter's love of space and science.Millie Harrison-Rice – David's wife. Shares her husband's ability. She spends much of her time taking care of her ageing mother.Millicent "Cent" Rice – Named after her mother, Cent is the 17-year-old daughter of Davy and Millie. Cent takes her love of science to a whole new level as she plans (and executes) her own space program which she calls Apex Orbital.Samantha Harrison – Cent's grandmother (Millie's mother). She has broken her hip again and is not recovering well, therefore the Harrison-Rice family moves her into their home and make every effort to take care of her and hopefully help her recover effectively.Tara Bochinclonny – Together with Jade, Tara is one of Cent's best friends. Tara has a knack for marketing and becomes Apex Orbital's public relations director.Jade Chilton – Jade is the daughter of somewhat wealthy parents. She is in a relationship with Tara and together the two of them are Cent's best friends. Jade is going to Smith College for graphic design and does most of the design work for Apex Orbital.Joe Trujeque – Joe is a Stanford University student and Cent's boyfriend... sorta. The last they saw of each other Cent had caught him in bed with his "study partner". Eventually he begins working with the others on the Apex Orbital project, mainly out of necessity for more help that already knows Cent's secrets.Cory Matoska – Named after a real person, Dr. Matoska is the inventor of the MCP (Mechanical Counter-Pressure) suit and primary partner/adviser of Cent in her efforts to create Apex Orbital.
