This list covers the characters from SSSS.Gridman, SSSS.Dynazenon, and Gridman Universe by Studio Trigger in the Gridman Universe, a fictional world created by Tsuburaya Productions.

Protagonists Gridman

is a of the alternate dimension who attempted to save Akane Shinjō when Alexis Kerib brought her to a replica of Tsutsujidai City. But Gridman is defeated by Alexis Kerib and fragmented across Tsutsujidai with one piece of him inhabiting the body of Yūta Hibiki with his memories sealed in the process while his subconscious resides in the pawnshop's PC Junk. The subconscious reminds Yūta of his mission, explaining they need to merge in order for Gridman to battle the Kaiju attacking the city. While Yūta and the Neon Genesis Junior High Students were the only ones that could interact with Gridman, Rikka and Utsumi are able to perceive him after witnessing his first fight and Calibur upgrading Junk. Because of his fragmented state, Gridman was forced to wear limiter armor that initially in his purple-colored before it is optimized into the reddened by Junk's upgrade. His finisher is , an attack fired from his Accepter on the left hand. As the Neon Genesis Junior High are embodiments of the other fragments of his being, Gridman can use their Assist Weapons form for additional strength in combat. : A formation with Battle Tracto Max forms a pair of gigantic forearms and increases his brute strength. His finishers are and . : A formation with Buster Borr, granting him a chest armor and a set of ranged weapons from his caterpillar threads and Twin Drills in . His finisher is . : A formation which occurs when Sky Vitter forms as Gridman's helmet, waist and leg armor. In this form, Gridman gains superiority in high-altitude combat and disorient his opponents with . : Gridman's ultimate formation attained by combining with the four Assist Weapons at the same time. In this case, both Gridman and the Assist Weapons are deployed in half their usual size to conserve energy, forming a full-sized robot once combined. In this form, Gridman has all the abilities and techniques from his other formations at his disposal. His finisher is the . After the Neon Genesis Students restore the fragments to Gridman, he regained his original form and powers while defeating Alexis. During the events of Gridman Universe, revealed to have created adult clones of Anti and 2nd to aid the Gauma Squad during the events of SSSS Dynazenon, Gridman gains the ability to transform into his white-armored form and combine with Dynazenon and Big Golburn to become .

Gridman Alliance is a trio of high school students who are the protagonists of SSSS Gridman, helping the Hyper Agent Gridman battle the Kaiju attacking their city. Due to their connection with the hero, they were the only ones who are not affected by the changes made when one of Akane's Kaiju killed a victim, causing them to be erased from existence. Their base of operations is Junk Shop Aya, Rikka's shophouse.

An amnesiac young boy who wakes up near Rikka's house who lives alone in his family's apartment since his parents are on a business trip, initially being the only one who can see Gridman and the Kaiju custodians around the city. It would later be revealed that he is actually Gridman possessing the real Yūta, regaining his memories and leaving his host once he became whole and captured Alexis. During the events of Gridman Universe, piecing together the missing parts of his memory from being possessed, Yuta becomes a willingly host to Gridman when the latter needs his help. The character is based on from the original tokusatsu show.

The sole female member of Gridman Alliance and Yūta's classmate, who found the amnesiac boy in front of her house. Out of her teammates, she desires a normal life but wishes Yūta to keep fighting as Gridman to save their friends. She also extends that wish towards Akane, even after learning that she was created by Akane and programmed to be her friend. The character is based on from the original tokusatsu show.

Yūta's classmate and founder of the Gridman Alliance, specialized in human networking and is a fan of tokusatsu, including the Ultra Series. He also had a crush on Akane before learning the truth about her and their world, going through a bit of an existential crisis over it. The character is based on from the original tokusatsu show.

NGJHS The NGJHS, short for , is a quartet of Hyper Agents who pose as youths dressed in black. They are later revealed to be embodiments of Gridman's scattered fragments modeled after his memories and became living beings in their own right. This factor plays in their forms being able to combine with Gridman and increase his power, initially one at a time before their power output is reduced so they can all appear and form Full Powered Gridman. But when Gridman is absent, the Assist Weapons can combine on their own into . In contrast to the agile Gridman, Powered Zenon relies on strength and its signature move is . During the events of Gridman Universe, joined by Rex, the Assist Weapons gain the ability turn into a purple version of their Powered Zenon form called Powered Knight Zenon and combine with Gridknight to form Full Power Gridknight.

A man who helped the Gridman Alliance to optimize Junk and search for the missing victims of Ghoulghilas' attack. He is named after the Samurai Sword from Superhuman Samurai Syber-Squad. He has four swords stored on his back, one being a katana and two other is a pair of barbed broadswords. His Assist Weapon form is , a sword that allows Gridman to perform . During the formation of Full Power Gridman, the jettisoned and becomes the formation's breastplate. When the rest of his teammates combine into Powered Zenon, Gridman Calibur turns into , allowing them to execute . Under possession of Gridknight, the Gridman Calibur transforms into to perform .

A tall man with a mask, his weapon is a pair of gauntlets, transforming into a mace for self-defense purpose. His Assist Weapon form is named after the Tracto combat vehicle and its pilot Tanker from Superhuman Samurai Syber-Squad. His Assist Weapon form is , a ten-wheel drive armed with a pair of .

An androgynous boy who is named after the twin-driller tank from Superhuman Samurai Syber-Squad. He has a pair of handheld knives stored under his sleeves. His Assist Weapon form is , a yellow twin-driller subterrene armed with and . Despite the existence of his , his teammates proclaimed them as non-functional in combat.

(Japanese); Chris Burnett (English) A man with a laid-back attitude who is named after the Vitor fighter jet from Superhuman Samurai Syber-Squad. His Assist Weapon form is , a blue-colored fighter jet armed with .

Gauma Squad The protagonists of SSSS Dynazenon.

A mysterious man who befriended Yomogi after the latter offered him food, piloting the submarine component of Dynazenon. Gauma is a whose power to manipulate monsters diminished, forcing him to instead pilot the titular mecha, Dynazenon. Gauma is later revealed to be a former member of the Kaiju Club in their previous incarnation from five millennia prior, who died fighting against the others when they betrayed the princess they were sworn to protect. His mummified remains were uncovered during the events of Gridman the Hyper Agent, where he indirectly provided Gridman with the Assist Weapon Dyna Dragon. Because his link to the Kaiju was severed, Gauma is gradually dying and hides this fact from his teammates, eventually passing away after Gagula is destroyed. But Gauma's spirit reincarnates within Dynazenon, joining the Neon Genesis Junior High Students under the name .

The main viewpoint character of SSSS.Dynazenon. A high school student in his first year who took on a part-time job at a convenience store to cope with his parents' divorce and his mother getting a boyfriend. He befriended Gauma after offering him food and was dragged into co-piloting Dynazenon due to being nearby when Shalbandes attacked. Out of the four pilots, Yomogi's work schedule prohibited him from spending more time in training for his piloting skills. During the course of the series, Yomogi develops the power of Instance Domination, allowing him to temporarily manipulate monsters. Yomogi pilots the robot component of Dynazenon. In the presence of Gridknight, the robot is able to form into the for the giant to wield. In an original storyline written by Akira Amemiya for the SSSS.DYNAZENON SHOW, a live event held on October 17, 2021, Yomogi marries Yume ten years after the events of the series.

One of Yomogi's classmates; a girl with a reputation for cheating boys by always standing them up for "dates". She was forced by Gauma into co-piloting Dynazenon after she makes Yomogi her most recent victim. Many of her unusual traits are implied to be the result of her poor relationship with her late sister, who was found dead before the events of the story, and she spends much of her time investigating that incident. Yume pilots the stealth aircraft component of Dynazenon. In an original storyline written by Akira Amemiya for the SSSS.DYNAZENON SHOW, a live event held on October 17, 2021, Yume marries Yomogi ten years after the events of the series.

A 33-year-old NEET who lives with his mother, who was forced by Gauma into co-piloting Dynazenon after Chise asked him to accompany her when the Kaiju Shalbandes attacked. He is highly troubled by an incident from his school years where a classmate asked him to run away with her after finding a large amount of money hidden in a nearby building, only for him to turn her down. When she turns out to be Yomogi's supervisor and recently married, he becomes deeply tormented by his past. Koyomi pilots the , a race car component of Dynazenon.

Koyomi's cousin, who addresses the former as her senior. Although not a pilot of Dynazenon, Chise often hangs out with them due to Koyomi's participation, and had once substituted for Yomogi in Dynasoldier after he fell ill. Her deep frustrations regarding school and feeling excluded by the Dynazenon pilots manifest the Kaijuu Goldburn from its seed.

A Kaiju-fighting robot summoned by Gauma through the use of a dragon ornament given to him by the princess five thousand years ago, after his ability to control Kaiju diminished. As it requires four pilots to operate, Gauma was forced to include Yomogi, Yume and Koyomi as his co-pilots. Dynazenon becomes a living being when the deceased Gauma possesses it. Able to separate into three vehicles and a smaller dinosaur-like robot, Dynazenon's components can form several additional combinations: , an alternate combination of all its pieces with a more dragon-like appearance. , formed with Dynasoldier and Dynawing. , formed with Dynasoldier and Dynadiver. , formed with Dynasoldier and Dynastriker.

Chise's personal Kaiju, named after an in-universe rock band and has the ability to change size. It was originally a baroque pearl that Chise picked up after Shalbandes's destruction, which slowly transformed into a golden-armored dragon over time. Unlike the stray Kaiju manipulated by the Club, Goldburn is loyal to Chise and serves a pivotal role alongside Dynazenon in forming Kaiser Gridknight and later Rouge Kaiser Gridman after evolving into Big Goldburn.

Gridknight Alliance A pair of Kaiju in human form who appeared in SSSS Gridman. During the events of Gridman Universe, both their younger and older selves existed as separate entities until they were synced to fight Mad Origin. They travel across the universes using the .

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