List of Zatch Bell! characters
Kiyo Takamine, known in the original version as and his Mamodo partner Zatch Bell, known in the original version as , are the main protagonists of the series. Kiyo is a genius 14-year-old junior high school student with an IQ of over 180. His classmates eventually shunned him due to his high intelligence causing him to develop an introverted and apathetic demeanor to the point where he skips school on a regular basis. One day, Zatch, an overly cheerful amnesic boy, is sent by Kiyo's father to live with Kiyo. Zatch's personality slowly influences Kiyo causing him to become more outgoing and friendly and allowing him to befriend many people during the course of the series. Zatch's past is slowly unraveled and reveals he is the son of the current Mamodo King and sealed within Zatch is a power known as . Also brought to light is the fact that Zatch's twin brother, Zeno Bell, was the one who erased Zatch's memory in order to make him suffer. In battle, Zatch's spells revolve around lightning. His most powerful spell, Bao, allows him to create a huge electrical dragon. Kiyo's voice actor is Takahiro Sakurai and his English voice actor is Jason Spisak. Zatch's voice actors are Ikue Ōtani and in the nine final episodes, Konami Yoshida. His English voice actress is Debi Derryberry.
JumpStart Adventures 6th Grade: Mission Earthquest
"JumpStart 6th Grade" is now part of a 5-disc set called "JumpStart Advanced 4th-6th Grade", along with , , and two bonus discs.Zack is a male human with blond hair and is one of the main characters in the game. Although clearly not mean, Zack seems to have a bit more "attitude" then Jess and is rude on a few occasions. He also appeared in , JumpStart SpyMasters: Max Strikes Back, and "Adventure Challenge" (also called Far-Out Field Trips, Ultimate Field Trips, and Extreme Field Trips), all in which he does not seem as rude as he does in his original appearance.
Jess is Zack's twin sister and one of the main characters. Her hair is short and red and she doesn't seem to have as much attitude as Zack. Like her brother, she has appeared in , JumpStart SpyMasters: Max Strikes Back, and "Adventure Challenge". 
Uncle Eli is one of the main characters. Intelligent, with gray hair, and wearing a green shirt and glasses, he helps Zack and Jess in different ways to accomplish their missions.
A dog, Roswell is blue in color and helps capture A.R.T.'s robots before they are taken to the Robot Re-Organizer.
A brown-colored monkey, Enos was sent on a rocket ship with A.R.T. at the start of the game - before A.R.T. even caused trouble - because the human astronauts were asking for too much money. However, while in space, A.R.T. told Enos that "there's been a change of plans" and that he would use robots to redesign Earth, in which Enos promptly freaked out in response to and pressed the S.O.S. button. This apparently ended up sending an image of him and A.R.T. to Earthquest. Uncle Eli then told Jess & Zack about A.R.T., and the adventure began.
The main villain, A.R.T. is a computer with artificial intelligence who desires to redesign Earth using robotic menaces than Zack and Jess are to conquer. He is said to have evil logic.To save the world and complete the game, the user must go on missions by choosing one from the Mission Locator Map. At the start of each mission, the user must choose either Zack or Jess to be their partner. There are six different game types. After one type of game is completed, the user captures one of A.R.T.'s robots and take them to the Robot Re-Organizer. Once all the robots are captured and reorganized, then the game is completed. After a type of game is completed, the user may continue to play that type of game, though it will not bring them closer to the end. Each type of game has three places in the world where they may be played.