The characters in this list are from the 1993–1994 tokusatsu series Denkou Choujin Gridman.
Main characters Naoto Sho , a kind-hearted boy who loves computers, is the main protagonist of the series. After the attacks by Kahn Digifer begin to occur, he is contacted by Gridman and merges with him to fight against Kahn and Takeshi's monsters. Using the wrist-worn , Naoto slams his fist on a special button of the Acceptor (accompanied by using the call "!") so that he transforms into a special suit that allows him to enter the Computer World and merge with Gridman.
Naoto Sho is portrayed by .
Yuka Inoue is a young girl who excels in studies and programs. She helps maintain Junk and provides the team spirit and constantly encourages her friends to do their best. Despite being the target of Takeshi's one-sided crush, Yuka developed feelings for Naoto.
Yuka Inoue is portrayed by .
Ippei Baba is Naoto's other friend. Cheerful, he also helps monitor the computer when Naoto/Gridman fights. When Junk was first brought online, he used the painting program to design a superhero that would eventually become Gridman's body. With his skills as an artist, he would develop various Assist Weapons for Gridman's use.
Ippei Baba is portrayed by .
Junk is a homebuilt computer built from used computers and other junk. Whenever Gridman fights in a gigantic form, this would risk Junk from overloading.
Junk is voiced by .
Takeshi Todo is classmate of Naoto and his friends who spent most of his free time in an eerie room with his personal computer. As his parents were away, this formed his behavior towards one that is introvert and self-centered, causing Kahn Digifier to take interest in him. In every episodes, Takeshi would create monsters based on daily frustrations, mostly for getting revenge on misfortune, petty grudges, or punishing humanity. Takeshi also develops an unhealthy crush on Yuka, having some of his creations targeted her specifically. After Naoto saved him from Kahn, Takeshi developed Grid Hyper Beam, which was used to decimate both Kahn and his home's computer.
22 years later in the event anime Denkou Choujin Gridman: boys invent great heroes, Takeshi bonds with Gridman Sigma, transforming with the Acceptor to fight against real life monsters.
Takeshi Todo is portrayed by and is voiced by in the event anime.
Heroes
Gridman is a of the alternate dimension . While tracking down Kahn Digifer he encounters Naoto and, seeing as Naoto had a good heart, chooses him to merge with whenever battle must be done within the . To fight against larger monsters and resolve situations that are massive in size, Gridman receives the upgrade program P-L6806OX (the downside of this program is that it lasts for 10 minutes as it could overload Junk's system - when the power up begins to fade, a blue light on Gridman's head begins to blink as a warning) for the purpose of enlargement. Naoto, Yuuka, and Ippei usually socialize with Gridman over their computer by sending computer-written messages to him.
Lacking a physical body, he receives one based on Ippei's drawing of a superhero and can only move from Junk when the "GRIDMAN" is entered. His left hand is armed with the , through which he can fire , conjure the energy sword and execute his finisher, . Aside from that, he can perform the (a flying kick) and its stronger variant, . The from his chest repairs the damages done by monsters created by Takeshi and Kahn Digifier. In the series' finale, Gridman executes which was created by Takeshi to put an end to Kahn and simultaneously destroy his personal computer.
Aside from that, Gridman can access different forms when several Assist Weapons form an exosuit: : The result of combination with God Zenon's components. Sacrificing his agility for brute strength, Gridman receives additional padding and armor that allows him to be impervious to attacks. The twin drills from his shoulders can be used as , while his main finishing move is . : The result of combination with King Jet. Whereas Thunder Gridman focuses on strength, King Gridman fights with full use of speed and agility. He is armed with a pair of on his arms and has an oxygen filter that prevents suffocation from toxic gases. His main finishing move is the
Gridman is voiced by , and in Episode 30 when merged.
Assist Weapons In order to assist Naoto and Gridman from the Computer World, Ippei and Yuka can manipulate the Assist Weapons to support Gridman. These programs were created by Ippei designing them before Gridman materializes the concepts with his powers. In order to deploy them towards Gridman, Ippei or/and Yuka would be required to type his/her/their name/names in the Access Code. When not in use, the Assist Weapons were stored in the cache. In the series' final episode, Kahn Digifer's intrusion into Junk's Computer World causes all of the Assist Weapons to be destroyed. In Gridman the Hyper Agent: The Overlord's Counterattack photo novel, components of God Zenon and Dyna Dragon were restored for the battle against Neo Kahn Digifer and his monsters.
: The first Assist Weapon to be made, it is durable enough to sustain most of the monster attacks with super high electromagnetic waves. Yuka creates this program based on the CG produced by Ippei under his hunger, with the Barrier Shield inspired by his desire for hot dog. : A sword (sheathed in the Barrier Shield) which utilizes the to cut through monsters. : The combination of Plasma Blade and Barrier Shield, allowing Gridman to execute the . : This combat axe is a reconfiguration of the Gridman Sword in which the Plasma Blade's blade section disappears and the Barrier Shield is instead serving as a blade section via closing in a butterfly-like fashion. The Barrier Shield closes into a blade-shaped handle when the Gridman Sword is formed, but when the Thunder Axe is formed, the Barrier Shield itself acts as a blade section. : The combination of Thunder Jet, Twin Driller and God Tank. Ippei receives the inspiration to create Gridman's first support robot based on his little sister, Kana's robot toy. By itself, God Zenon can perform uppercut punch and rocket punch. God Zenon's components are: : A Mach-5 aircraft armed with Thunder Missiles. Forms the upper body, arms and head of God Zenon or the torso and head of Thunder Gridman. : A two-drill tank armed with Twin Lasers. Forms the lower torso of God Zenon or Thunder Gridman's forearms and shoulder armors. : An armored, tracked vehicle armed with God Cannon. Forms the legs of either God Zenon or Thunder Gridman. is a tyrannosaurus formed by Dyna Fighter and King Jet and fights with its burning breath. It is the robot form of Dyna Fighter and King Jet's combined form, (a larger aircraft armed with Fortress Missiles) and Gridman's second support robot. It was created based on the excavated tyrannosaurus remains. After the King Gridman combination code is created, Dyna Dragon remains in this form instead of its original components: : An aircraft armed with Dyna Missiles and Dyna Laser. It forms the head, central torso and tail of Dyna Dragon. It was originally the shoulder mounted , created based on the design of Asian lung found in one of the remains of Chinese mummy. It unleashes the attack. : A larger aircraft created as a support for Dyna Fighter. Its main armaments are King Missiles and the King Laser. Despite the entire Dyna Dragon is needed to form King Gridman, only parts from the King Jet that were accommodated.
Gridman Sigma is a Hyper World agent who is Gridman's successor and was originally planned to appear in a scrapped sequel of the television series. The character however appears in the event anime Denkou Choujin Gridman: boys invent great heroes, taking place where digital monsters that Takeshi and Kahn previously created were brought to life as illusions that wreak havoc upon the real world. Using the Acceptor, Takeshi transforms into Gridman Sigma as he faced against the monster threats.
Antagonists Kahn Digifier is the series' main antagonist. The dark lord of the Hyper World, he escapes to the Computer World and prepares to conquer Earth. Putting Takeshi Todo as his servant, he uses him to create monsters which he brings to life in order for them to attack the Computer World. He later upgrades himself into for his final battle with Gridman, most of the Assist Weapons and overwhelming him. Kahn Digifer is ultimately destroyed by the Grid Hyper Beam.
Aside from the ability to create monsters, Khan Digifier's gigantic form can launch and summons the .
Kahn Digifer is voiced by .
Monsters Most are virus monsters created by Takeshi and brought to life by Kahn Digifier to act under his bidding, serving their creator's petty grudges to the catastrophic extremes that Kahn Digifer intends to have an effect on the human world.
: A dinosaur-like monster with a diamond-covered back, Gilarus was originally designed by Takeshi as part of his monster design programming. When Kahn introduced himself, Takeshi decided to go along with the dark ruler's plan and sent Gilarus to the Inoue Hospital as a revenge for Yuka turning down his love letter. It crashed the hospital's computer system and caused havoc in the operating room where Daichi was undergoing surgery at, until Gridman interfered with the process. Gilarus became Gridman's first kill and undo the damages on the hotel's computer system, allowing Daichi's operation to continue unharmed. : Gilarus' data was upgraded and redesigned by Takeshi with body armor and steel claws, and was used to tamper with time all around the world and the internal clocks of every human; Yuka and Naoto were in the basement at the time and therefore were unaffected. The upgraded monster was destroyed by Thunder Gridman's Thunder Grid Beam. : An orange dinosaur-like monster with six long spike-like appendages. Instead of being driven by Takeshi's grudge, it was created by Kahn when the boy was under his brainwashing. Rampaging in an information center's mainframe, sealing Gridman off, Bamora creates a satellite tower that could tear a hole into reality. But Gridman manages to keep Bamora from leaving the Computer World once the portal opened and deletes it with his Grid Beam. : Bamora's data is later upgraded with armor and a mace on both its left hand and tail, used by Takeshi to get revenge on the police by disabling police communications and jail cells. Though it overpowered Gridman, Bamora is destroyed by Thunder Gridman. : A turtle-like quadruped virus with two volcano holes built into its shell that launch powerful fireballs. Volcadon was created to disrupt cell phone frequencies due to Takeshi becoming fed up with his parents' constant phone calls. It was destroyed by Gridman. : A blue Pterodactylus-like virus that can turn invisible. It was created by Takeshi when a genius creator named Hosono challenged the monsters' constant hacking incidents with his modernized car, sending said vehicle into a rampage in the streets. Though Stealgan overwhelmed Gridman, Yuka sends him a paint program to disable Stealgan's cloaking so he can blast the virus' wings off and finally destroyed it with the Grid Beam. : Stealgan's data was upgraded by Takeshi to get even with a CG art company and stealing color from the city. It was destroyed by Gridman after the Dina Fighter and the King Jet disable its cloaking.