Characters / Gundam Build Divers Re:RISE

The character list for Gundam Build Divers Re:RISE

BUILD DiVERS

Hiroto Kuga / Hiroto

Voiced by: Chiaki Kobayashi (Japanese), Billy Kametz (English)

Gunpla: PFF-X7 Core Gundam, PFF-X7/E3 Earthree Gundam, PFF-X7/V2 Veetwo Gundam, PFF-X7/M4 Marsfour Gundam, PFF-X7/M1 Mercuone Gundam, PFF-X7/J5 Jupitive Gundam, PFF-X7II Core Gundam II, PFF-X7II/U7 Uraven Gundam, PFF-X7II/S6 Saturnix Gundam, PFF-X7II/N8 Nepteight Gundam, PFF-X7II/BUILD DiVERS Re:Rising Gundam, ASW-G-08 Gundam Barbatos Lupus Rex (GBD Battleogue Only), PFF-X7II+ Core Gundam II Plus, PFF-X7II+/P9 Plutine Gundam (Build Metaverse Only)

^{Click here to see his Diver avatar}

A seventeen-year-old high school student from Yokohama. Two years ago, he was a rather famous gunpla model builder and even became a renowned Diver in Gunpla Battle Nexus (GBN) Online with his custom Core Gundam and PLANETS system armors. However, he has since given up on all of that to become a wanderer, scouring GBN for someone.

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• Accidental Hero: Hiroto’s split-second decision to not shoot down Riku’s 00 Sky is the primary catalyst that allowed El-Divers to continue existing and it never occurred to him until episode 20 that the events leading up to and following the first series’ ending would’ve never happened had he actually took the shot.
• All Your Powers Combined: His Re:Rising Gundam is created by combining his Core Gundam with May, Kazami, and Par's own Gunpla, and has a power output beyond all four of the machines on their own.
  • He does a variant of this during the final episode with the EX: Limited Change, equipping himself with a composite armor composed of pieces from all of his other PLANET SYSTEM Armors sans the Nepeight and Earthree to fight Alus and his forces.
• Awesome by Analysis: One of Hiroto's most common strategies is triangulating an unseen enemy's position by the angle and direction of their attacks. Even when short of the three shots needed to determine the enemy's position, he is perceptive enough to predict the enemy's target and intercept their attack.
• Badass Cape: Played with. After becoming a wanderer, Hiroto added a poncho to his avatar.
• Berserk Button: The name "Build Divers" seems to get Hiroto riled up. He gets angry when Kazami starts talking about how he fought alongside the Build Divers and Kyoya Kujo and is stunned speechless as he's faced with being part of a group called "Build Divers". Mostly because those things bring up very bad memories of deleting Eve due to the bugs that she was trying to contain.
• Bilingual Bonus: Though Hiroto used English names for his PLANETS system armors, which armor got which planet name is actually based on the Japanese planet names.
  • Mercury is literally "The Water Planet" in Japanese, thus Mercuone focuses on underwater deployment.
  • Venus is "The Metal Planet", thus Veetwo focuses on More Dakka missiles and artillery.
  • Earth is also basically just "Earth" in Japanese, and thus Earthree focuses on terrestrial deployment.
  • Mars is "The Fire Planet", thus Marsfour focuses on heat-based melee weapons.
  • Jupiter is "The Wood Planet". In the Shinto religion, one belief is that gods descend from the heavens via trees, thus Jupitive focuses on space deployment and combat.
  • Saturn is "The Ground Planet", thus Saturnix has wheels on the feet for high-speed ground movement, and weaponized earthmover equipment like a giant drill and claw.
  • Uranus is "The Sky King Planet", just like the Greek god the English planet name comes from. Thus, Uraven focuses on Surveillance Drones and Defog of War to be an "eye in the sky" for Hiroto and his allies.
  • Neptune is "The Sea King Planet", also like the Greek god the English planet name comes from. Thus Nepteight is based around an interplanetary propulsion system that allows it to travel through the "sea of the stars."
  • Pluto is "The Underworld King Planet", based on its namesake deity in Roman Mythology, and is considered as the farthest planet from the Sun. Plutine exhibits this analogy through its mainly dark color scheme by way of using Ecopla^*Gunpla parts made out of recycled plastic, mainly processed runners and sprues from other model kits., and with its main weapon being a Scythe.
• Blue Is Heroic: Three of Hiroto's nine PLANETS System Armors' color schemes are a shade of blue, and two of them are his go-to choices in both seasons.
• Boring, but Practical: As mentioned later on, Hiroto's design philosophy seems to eschew a lot of commonplace techniques made by other Gunpla pilots such as super modes and finishing moves. Even the 'gimmick' of the Planet systems is based around sensible combat roles and situational needs.
• Break Out the Museum Piece: His Uranus Armor's plastic container was sealed by a cellophane tape unlike most of his frequently used Planet Systems, with the end of episode 17 imply that it was the first time in a while that he choose to reuse it. Despite its weapon's destructive potential, his main reason sealing it was not the case of Godzilla Threshold, but to suppress his emotional trauma from the Second Battle of the Coalition of Volunteers.
• Broken Ace: Though a brilliant builder and pilot, the fact he agreed to Eve's request to kill her, along with his continuing hatred of Build Divers for inadvertently causing the events that led up to her death (even though he knows they did save GBN and Eve from Tsukasa's Break Decals in the first place) has led him to think he's a fundamentally awful person, undeserving of praise, of True Companions, or ever being a hero.
  Hiroto: I trampled on people's feelings and wishes. There's no way someone like me could ever help anyone!
• Character Development: At the start of the series, Hiroto is a broken shell of the person he was before Eve's death who does solo missions and scouting GBN for her remains. Hanging out with the BUILD DiVERS and the Eldorans while saving their village from Alus' forces mellows him out as the series progresses.
• Chekhov's Gun: Of a sort. Since the Core Gundam is based off of the RX-78-2, it also has access to the Heat Proof Film used early on in the original anime for atmospheric re-entry.
• Cold Sniper: Hiroto is cold and anti-social and the Earthree, and later Uraven, has powerful sniping capabilities.
• Color-Coded for Your Convenience: Each of Hiroto's PLANETS system armors have their own unique color scheme: blue, red, green, navy, white, purple, orange and aquamarine.
• Combining Mecha: His Core Gundam's main gimmick is the ability to combine with several different support machines that provide it additional armor and weapons that focus on things like melee combat, long-range artillery, defense, underwater deployment, and so forth.
  • Taken to its logical extreme with the Re:Rising Gundam, which combines parts of all the Build DiVERS' gunpla.
• Contrasting Sequel Main Character: Not just to Riku of Build Divers, but also to Sei of Build Fighters and Sekai of Build Fighters Try. Unlike the previous three, Hiroto is an Experienced Protagonist; he's been playing GBN since it launched and was even a fairly well-regarded GPD player before that, has created or can create Mecha Expansion Packs for his Core Gundam for any type of situation, can create plans on the fly and can handle almost anything thrown at him. He's also The Stoic, rarely cracking a smile or even raising his voice; you could put him in Celestial Being or Tekkadan and he'd fit right in. He's also a Broken Ace who is mostly divorced from reality as he keeps hunting down someone he lost within a video game.
• Crazy-Prepared: Every armor set for the Core Gundam, despite focusing on a huge range of potential missions and deployment types, were made years ago. Unlike most GBN players, he also carries around traps, decoys, heat-proof film, and other tactical items an actual veteran soldier in a classic UC-era Gundam series would use. This all comes in handy when fighting on Eldora.
  May: A new armor?
  Hiroto: No, it's not exactly new...
  • The Extra Limited Change is another example. With GBN enforcing limited total equipment, and the need for players to personally customize Gunpla features, Hiroto had to have the Extra Limited Change ready and practiced with (showing absolutely no hesitation or discomfort with the slapdash mix of parts), purely on the off chance someone else loaded into the game specifically to bring Hiroto extra Planets to work with. This was seemingly arranged with Matsumura just in case, and even then the intention was to have them on hand as proper backup. The transport getting shot down and leaving Hiroto with limited parts to swap with was definitely not in the plan.
• Defrosting Ice King: Due to the trauma he suffered for deleting Eve, Hiroto became distant, cold and stoic individual who prefers to work by himself, but after spending and bonding with his teammates and people of Eldora, he gradually learns to trust them and return back to his sociable self.
• Despair Event Horizon: As seen in Episode 20, he crossed this two years ago when he was forced to delete Eve after the bugs she absorbed from Sarah began to overwhelm her. Already suffering from being forced to kill Eve, it goes from bad to worse when he almost shot Riku down out of spite. The fact that GBN was saved regardless of Sarah's fate was no consolation for him, and this one-two punch of traumatic events leave him emotionally scarred and broken for two years. It took him coming clean to his teammates and May convincing him that his actions allowed EL-Divers like her to live to finally heal and make peace with his past. Rize further illustrates just how traumatic this was for him when Rize accidentally touches the Core Gundam and is subsequently forced to relive all of Hiroto's most painful moments - causing him to suddenly break down crying without any obvious reason why and quite possibly become motivated to start his journey as the Core Gundam Rize.
• Experienced Protagonist: Starts out the series already a veteran of GBN. Episode 19 goes even further on this by revealing that Hiroto is an experienced player of GBN's real-world predecessor, Gunpla Duel.
• Expy: In a few ways, Hiroto can be considered one to Shinn Asuka, the protagonist of Gundam SEED Destiny. Both of them are black-haired, highly skilled ace pilots with a traumatic past, where the protagonist of the previous series unintentionally played a role in the death of someone they cared about. Both Hiroto and Shinn also piloted Gundam which prioritizes their modular nature capable of combining with various add-ons to be effective in combat.
• Foil: He's one to Riku. Whereas Riku started out in Build Divers as a complete newbie when it came to GBN and gunpla battling in general, Hiroto starts out in Re:RISE as an already experienced player and was even a former member of Force Avalon. This also seen in their respective gunplas. Whereas the 00 Sky focuses on overwhelming power and speed complete with a Super Mode, the Core Gundam focuses more on pure versatility and is able to operate in any type of situation provided Hiroto is able to bring along the necessary armor sets.
• For Want Of A Nail: Rize's adventures wouldn't have happened if Hiroto flew just a little higher above him, thus preventing the former from grazing the Core Gundam's frame and realizing the hell the latter's been through long before the show itself elaborated on it.
• Hero of Another Story: His flashbacks make it clear he went through a similar set of events with Eve as Riku and the original Build Divers went through with Sarah a few years prior. But while they've become Legendary in the Sequel, Hiroto is a complete unknown. Before quitting, he used to be part of Force Avalon and was there at the second Coalition of Volunteers against Build Divers and their allies.
• If You Kill Him, You Will Be Just Like Him!: Hiroto pointed out to Cuadron that giving Masaki a Mercy Kill will only burden him with the young man's guilt too. He also indirectly prevent Cuadron from falling into the same trauma as he did from killing Eve.
• I Let Gwen Stacy Die: As revealed in Episode 20, being forced to delete Eve took a massive psychological toll on him. The guilt he feels from failing to save her scars him to the point of becoming an emotionally-shackled loner who struggles to make peace with his past.
• Interspecies Romance: As seen in flashbacks and especially Episode 19, he views his time with Eve (EL-Diver) as one of his most precious memories. As he spends more time in GBN, their relationship grows to the point of becoming a romantic one. This becomes a major reason why Hiroto ends up so traumatized when he's forced to delete her.
• It Was with You All Along: The person Hiroto was looking for so desperately over the entire series, Eve, in hopes she was right that even if she was killed, she would simply return to the sea of data that is GBN to become something new? It turns out she was indeed reborn as May, the EL-Diver he met in episode 1.
• I Work Alone: Deconstructed. Hiroto enters the story in search of a girl from his past, only to be dragged into a strange mission with a team he never intended to join. He does a lot of heavy lifting due to Kazami's stubbornness and Parviz's inexperience, but it ultimately comes off as him dismissing his teammates as largely incompetent. This reaches a point in Episode 6, where he is called out for using the Veetwo as a means to evade the jamming another team performed, but not warning his other teammates about it. He ultimately realizes that he's making a mistake when Hinata talks about how her seniors are trying to get her to improve and that it's sad to be ignored.
• Kill the Ones You Love: He was forced to delete Eve at her request when she could no longer control GBN's bugs she has absorbed within herself.
• Logical Weakness: As much as Hiroto's Planet System dramatically alters his Gundam's performance, they cannot completely match a machine dedicated to a certain purpose. For example, the Mercurone wasn't as fast or as nimble as the suits of Force Granada Bleu which were dedicated amphibious machines. Furthermore, Hiroto seems to be limited to two Planet Systems at a time, meaning that he cannot be completely prepared for unexpected situations. Finally, the Core Change process takes time. However, Hiroto can perform a faster Limited Change to just get the weapons from another unit.
• Mid-Season Upgrade: He upgrades his Core Gundam to a more powerful unit that incorporates elements seemingly based off of 00 Sky in Episode 13. As shown in episode 15, the upgrade made the Core Gundam into a Transforming Mecha, with a Core Flyer mode resembling the Wing Gundam's bird mode.
  • By the time of Metaverse, Hiroto has given the Core Gundam II minor tweaks to improve its capabilities in one on one combat and the performance of the Core Flyer.
• My Greatest Failure: Episode 20 reveals that being forced to delete Eve and let Riku escape continues to haunt him to this day.
• Manly Tears: After describing his Dark and Troubled Past to his team in Episode 20.
• Not So Stoic: Hiroto suffers an emotional breakdown in Episode 20 after he finishes sharing his past with Eve and his run-in with the Build Divers with his BUILD DiVERS teammates. It takes a Cooldown Hug and a kiss from May for him to finally feel comfortable sharing his pain with the team.
  May: (embracing Hiroto) Don't hold back. If you want to cry, you should cry as much as you like.
• Oblivious to Love: Hiroto is completely unaware Hinata has a Childhood Friend Romance crush on him, or even that she's attractive.
  Matsumura: And you told me you didn't know any pretty girls.
  Hiroto: Huh?
• Palette Swap: In Divers Battlogue, Hiroto has a pair of spare Core Gundam I Is at the ready in different colors; each having been tweaked for better performance in different theaters. The dark blue and black Titans Color variant for better performance on Earth, and the white and pale purple G-3 Color for better performance in space.
• Pint-Sized Powerhouse: Even without its support machines, the Core Gundam is still more than capable of fighting on its own. The second season reveals that the Core Gundam itself was inspired by Hiroto piloting a SG^*Speed Grade which is 1/200 in size RX-78-2 Gundam and defeating a PG^*Perfect Grade which is 1/60 in size Strike Gundam with it.
• Red Oni, Blue Oni: Hiroto is the blue to Kazami's red, being calm and calculating in contrast to Kazami's headstrong and hot-blooded nature.
• Shoot the Bullet: He can deflect a beam by firing another beam at it, thanks to both the specialization of the Uraven Gundam and his own superb sniping skills.
• The Stoic: Is usually calm in battle and rarely smiles if at all. That is, until episode 20. See his Not So Stoic entry above for more information.
• Sugar-and-Ice Personality: He mostly comes off as aloof and The Stoic lonewolf but Hiroto is still a heroic and selfless Nice Guy who is willing to risk his life to protect the innocents and eager to help people in need.
• Super Mode: Entirely averted, which is a rarity for a Gundam protagonist and especially rare for a Build character. Neither Hiroto nor Core Gundam in any of its configurations, barring Re:Rising, have a super mode like 00's Trans-Am, SEED mode, ZERO system, TRIAL, or Alaya-Vijnana Limiter Off.
• Swiss-Army Hero: The Core Gundam can change its focus depending on the support machine it combines with.
  • Earthree: The most balanced configuration, with limited additional equipment to maintain maximum maneuverability, a long-range, high-penetration beam rifle for sniping, and an extended shield for better defense.
  • Marsfour: This configuration forgoes ranged weaponry and focuses on heat-based close combat weapons, armed with 3 giant heat swords, a smaller heat hawk, and Wolverine Claws on the wrist guards and feet.
  • Veetwo: This configuration comes loaded to the brim with multiple missile launchers and two beam cannons, one large cannon combined with the Core Gundam's normal beam gun and the other smaller one mounted to its backpack.
  • Mercuone: A configuration specialized for underwater missions. It comes equipped with a large number of control plane fins for deep-sea maneuverability and pressure-resistant armor. It also adds a harpoon firing needle gun, two fin zambers that provide additional maneuverability and excellent cutting power underwater, and two underwater bits equipped with torpedo launchers and their own propellers, allowing them to function as boosters on other units for hindering enemy movement or enhancing Hiroto and his allies own.
  • Jupitive: A configuration designed for space deployment. It adds thrusters on the back, shoulders, and feet for increased speed and maneuverability in a zero-g environment. Its armaments meanwhile include a multiple-barrel beam Gatling gun, two arm-mounted manifer bits equipped with their own beam rifles and two back-mounted multi-container bits equipped with their own high output thrusters, beam swords and beam shields.
  • Uraven: A configuration focused on ultra-long-range sniping and recon. It includes an even higher power beam rifle than previous configurations, three back-mounted sensor bits, and two wired sensor units mounted on the legs that allow it to search for targets from even miles away. The Uraven is also more heavily armored, giving it added protection but less speed and mobility than configurations like Earthree.
  • Saturnix: A configuration built to allow the Core Gundam to go toe-to-toe with Gundam Frames from Mobile Suit Gundam: Iron-Blooded Orphans, focused on powered melee weapons. It includes increased armor, treaded wheels on the feet for high-speed land movement, and a massive spear breaker drill and a melee vise plier claw with their own reactors for ripping through enemy defenses.
  • Nepteight: A configuration based around the Voiture Lumiere technology from Mobile Suit Gundam SEED CE.73: Stargazer. This unconventional interplanetary propulsion system gives the Core Gundam extreme speed and maneuverability, along with the ability to generate various beam attacks without the need for standard beam weapons.
  • Re:Rising: A Super Robot configuration created by combining with the Gunpla of his teammates on BUILD DiVERS. It features exceptional durability and a Mobile Fighter G Gundam-esque Golden Super Mode that can unleash a massive Sigil Spam Wave-Motion Gun called "Grand Cross Cannon".
  • Plutine: Introduced in Build Metaverse. A dedicated dueling configuration designed for extended periods of one on one combat. Its special EP Armor absorbs and converts kinetic force released from Plutine itself and surrounding units into energy that it uses to extend its operating time. It is equipped with a spear that can convert into a Sinister Scythe as well as the Breaklow Feathers, a set of four shoulder mounted blades that can detach and either reposition themselves to function as Wolverine Claws by mounting on Plutine's wrists, or combine into a pair of remote-controlled Fuma Shurikens.
• Took a Level in Cheerfulness: After he was forced to delete Eve 2 years ago, Hiroto became aloof, stoic and depressed who refuse to join other forces because he can't endure the pain of losing another friend again. But he gradually mellows out after spending more time with his teammates and people of Eldora, which caused him to finally make peace with his past and eventually return back to his friendly personality, which he used to be before Eve's death. But he still retains his no-nonesense attitude.
• Transforming Mecha: His Core Gundam II is able to transform into a Flight Mode.
• Used to Be More Social: Flashbacks by Hinata reveal that Hiroto was a cheerful and friendly kid back in their childhood and middle-school years, before being forced to delete Eve and nearly putting all of GBN in jeopardy by allowing Riku to save Sarah from being deleted broke him hard.
• Weak, but Skilled: The Core Gundam itself. Compared to previous main suits in the Build series, the Core Gundam lacks the overwhelming firepower that its predecessors all had. Instead, it focuses more on pure adaptability which allows Hiroto to perform different types of roles for any given situation.
  • Averted with the Core Gundam II. Both transformed and not, Hiroto is more than capable of keeping up with aces from the previous series, and it's when riding the Jupitive unit that the Core Gundam II trades blows evenly with Riku's 00 Sky Moebius in Trans Am Infinity.
• When He Smiles: Starting Episode 21, Hiroto starts smiling more often after he finally makes peace with his past.
• Your Approval Fills Me with Shame: Hiroto takes it rather hard that Alus specifically copied the Earthree/Uraven believing them to be the reflection of his ideal self; it didn't take long for Hiroto to realize that Alus must have drawn from his performance during the second Coalition of Volunteers battle.

May (Season 1 Spoilers)

Voiced by: Mai Fuchigami (Japanese), Lauren Landa (English)

Gunpla: JMA0530-MAY WoDom Pod, JMA0530-MAYBD WoDom Pod +, HER-SELF Mobile Doll May, NZ-999 II Neo Zeong (GBD Battleogue Only)

^{Click here to see her real life appearance}

A female Diver who believes in solo play, she is only interested in Gunpla Battle and battles every day in Gunpla Battle Nexus Online. She is feared by divers in a battle style that quickly determines the best strategy and she calmly pursues her opponents. She's later revealed to be an El-Diver, one specifically under the care of Magee, and is monitoring other players on his behalf.

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• Action Girl: In addition to being the only girl in the group, May also happens to be the second-strongest fighter that team BUILD DiVERS has. She's also the only member who can defend herself outside her Mobile Suits with her martial arts and a handgun.
• Aloof Dark-Haired Girl: She is a tall Robot Girl with black hair and comes of as The Stoic most of the time.
• Ambiguous Situation: Since EL-Divers are born from a mix of different people's feelings, she can be read as both the dead Eve's reincarnation, having been born from Eve's data, and as the daughter born from both Eve and Hiroto's feelings and wishes, as the earring she has on her armband necklace can be read as the bond between Hiroto and Eve as well.
• Anywhere but Their Lips: Episode 20 shows her kissing Hiroto on his cheek. This catches her teammates off-guard as seen in their Reaction Shot.
• Backup from Otherworld: With the reveal in the finale that she was born from Eve's data and feelings, it's implied all the times Hiroto suddenly started seeing Eve's spirit after coming to Eldora was due to May being there. Similarly, all the times May knew where to find Hiroto, or what he was thinking, was due to Eve's spirit still being a part of her.
• Benevolent A.I.: In Episode 9 it is revealed she has a Mobile Doll usually associated with the friendly AI known as EL-Divers. And indeed, despite being an artificial intelligence with some serious social awkwardness problems, she still actively supports her teammates and even tries to encourage Hiroto to come out of his I Work Alone shell.
• Benevolent Precursors: As the catalyst for the EL-Divers creation is implied to be the digitized consciousnesses of the Ancients, May can be seen as a descendant of the ancient people of Eldora, returned to save the new people of Eldora from Alus's genocidal madness.
• Blade Below the Shoulder: Among the Mobile Doll May's armaments is a wrist-mounted beam saber emitter.
• Big Little Sister: She's quite a bit taller than Sarah, despite considering the older Sarah her big sister.
• Combat Stilettos: The pointed feet of her WoDom Pod are sharp enough to stab through armor and even chop off an enemy suit's head.
• Comically Missing the Point: Tends to technically deal with issues people have without really addressing their true concerns. For instance, she changes the team's name to "BUILD DiVERS" when the others object to taking the name of another existing team like "BUILD DIVERS".
• Contrasting Sequel Main Character: May shares the role of the AI member of the team with Sarah, but instead of being there for moral support like Sarah, May actually participates in battle and is the second-best pilot on the team.
• Cooldown Hug: In Episode 20, she does this to Hiroto after he finishes sharing his traumatic past with his team. She also kisses Hiroto on the cheek much to the surprise of their teammates.
• Cyber Cyclops: Her WoDom has one large eye in the center of its head.
• Desperately Looking for a Purpose in Life: As a newly born AI, she has been wandering GBN taking requests from various people to find what her "mission" in life should be. By the end of Season 1, and despite her misgivings, she ultimately settles on protecting the people of Eldora. The final episode reveals May is more focused on this than Sarah and other EL-Divers because the desires and feelings that gave birth to her were so strong they created a Memento MacGuffin she was born with, the earring that Hiroto gave to Eve. And yet, she has no idea herself just what those heartfelt desires that gave birth to her are.
• Deuteragonist: Of Re:RISE in general as May gets the most onscreen focus and development after Hiroto.
• Fem Bot: Her second Gunpla has a decidedly feminine form that mirrors May's own looks, despite being a giant mech.
• Foil:
  • To Hiroto. Both May and Hiroto have been described as stoic lone wolves, but May acts this way because as a young EL-Diver she doesn't really know how to be a team player and Hiroto knows what to do but he chooses to act alone. May uses this knowledge to help Hiroto because she knows he wouldn't openly ask for it.
  • To Alus: An AI just like her, but while May admits to being insecure about her emotional inexperience and still growing as a person, she consistently makes the effort to grow and learn from others and experience, none of which Alus either seems capable of doing or is even open to doing, merely falling back on his draconian interpretation of his primary directive.
  • To Eve, as a fellow EL-Diver involved with Hiroto. The finale even reveals she was created from Eve's, and possibly Hiroto's, wishes and feelings, making her something like Eve's reincarnation or Eve and Hiroto's daughter.
• Gangsta Style: How she fires her beam pistols as the Mobile Doll May.
• Guns Akimbo: Be it her EL-Diver form or her Mobile Doll, May is quite dexterous in using a pair of handguns.
• Kick Chick: Since her mobile suit has comparatively tiny arms, for melee combat she generally resorts to using her WoDom's sharp, armored legs to attack enemies. Her Mobile Doll's kicks can smash right through enemy Mobile Suits. May herself is capable of kicking something several times bigger than herself a considerable distance away.
• Meaningful Name: The Pod in the WoDom Pod's name makes sense when you know it is a protective housing for May's true Gunpla, the Mobile Doll May.
• Memento MacGuffin: She was born with an item that represented the wishes and feelings that gave birth to her, though she herself doesn't understand its meaning: the earring that Hiroto gave to Eve.
• Meta Mecha: Episode 25 shows that May doesn't pilot the WoDom Pod directly, but controls Mobile Doll May, which itself then uses a game controller-like device to pilot the Mobile Suit it hides inside. The controller can even be used on a wire, allowing May to essentially use both units at once for more complex maneuvers.
• Nonstandard Character Design: She's the only member of the team who doesn't use a Gundam-based suit, instead using a Walking Dome that was designed by the late Syd Mead and looks barely humanoid, with an oversized head and legs and comparatively tiny arms and torso, as opposed to the more standard armored human-looking mobile suits born from Kunio Okawara's designs. Her second Gunpla is similarly a giant metallic version of herself, which is even more nonstandard.
  • Even her Mid-Season Upgrade breaks the mold, being little more than some extra equipment in the vein of the GN Heavy Weapon upgrades from Mobile Suit Gundam 00.
• Not So Above It All: In episode 13, May gets incredibly flustered, pouts and flails her arms while shouting "Taxi!" with her voice a pitch higher, making the usually stoic May come off as comically adorable.
• Not So Stoic: Alus' Broken Record seems to set her off. Makes sense, given that he's practically the antithesis of her as an AI.
• Patchwork Kids: She can be read as being born from not just Eve's data, but also the feelings from Eve and Hiroto's bond, and has a more grown-up version of Eve's features and hairstyle, but with Hiroto's hair color.
• Reincarnation: The end of the show reveals she was born in part from Eve's data and feelings, with Hiroto suddenly seeing Eve's spirit multiple times after meeting May, and May having an armband with Eve's earring from Hiroto on it. Although given EL-divers are born from multiple people's emotions, and Eve's earring can be seen as the representation of Eve and Hiroto's bond, she could also be seen as Eve and Hiroto's daughter as well. And then there's the fact that Eve herself, like all EL-Divers, are reincarnations of the Ancient Eldorans whose transmitted consciousnesses found their way into GBN, meaning May has effectively been reincarnated twice.
• Ridiculously Human Robot: Like all EL-Divers, she's a fully sapient emergent AI. She mentions that she doesn't have quite the same emotional range as most human beings, but this comes off more as insecurity about her emotional inexperience and withdrawn personality than any real inadequacy.
• Robot Girl: Her second suit is a robotic mobile doll that shares her general appearance as an attractive, svelte girl in a skintight leotard.
• Robotic Reveal: After the Seltsam destroys the WoDom Pod, May suddenly switches to piloting a giant model of herself similar to what Sarah used at the end of the first Build Divers, and confirming that she too is an El-Diver.
• She Is All Grown Up: Her appearance is for all intents and purposes an older version of Eve, only with black hair and a different outfit.
• The Stoic: Something she shares with Hiroto is that she never seems to show emotion. She even admits that, compared to the other EL-Divers, she can't seem to emote as much.
• Suspiciously Similar Substitute: To Ayame from season 1, down to secretly reporting on their activities. However, instead of the Big Bad, it's her handler and surrogate parent, Magee.
• Sympathy for the Devil: She floats the idea that while Alus certainly needs to be stopped, he may not necessarily need to be destroyed, merely reset, citing that he is otherwise following his programming without any malice behind it, though the thought of showing Alus any form of pity or mercy understandably bothers Muran. It's tempered by the fact that she herself is especially set off by Alus' inability to comprehend his actions and constantly falling back on his protocol when she tries to reason with him, AI to AI.
• Tears of Joy: In the final episode she tears up after Hiroto expresses his gratitude to her for being born to help connect so many people, himself included, with each other.
• Three-Point Landing: She debuts her Mobile Doll form this way after ejecting from the heavily-damaged WODOM Pod.
• Throwing Your Shield Always Works: With the Mobile Doll May, instead of attacking with the shields, she throws them into the enemy's fire to defend.
• Tron Lines: Has glowing green lines that look like circuits running along the body and limbs of her online avatar.
• Two Aliases, One Character: In a way. Despite appearing to be a completely separate character, the final episode reveals she was created from Eve's data, and Eve's spirit only started appearing before Hiroto after he met May. Thus she's something of a new version or reincarnation of Eve.
• Units Not to Scale: Her WoDom Pod is quite a good deal smaller than the Walking Dome it is based on, being almost half the size.
• Walking Spoiler: It's a little hard to talk about the specifics of how she got her second Gunpla or her real-life identity without revealing the twist that she's an EL-Diver like Sarah from season 1.
• What Is This Feeling?: Being a newborn AI, May frequently finds herself confused as to the nature of emotions. In the final episode, she even gets confused why she's shedding Tears of Joy, as she thought people only cry when they're sad when Hiroto thanks her for being born to connect so many people together, even if she still doesn't know the feelings and purpose that gave birth to her represented by the earring that she was born with, the same one that once belonged to Eve.
• What Is This Thing You Call "Love"?: Par and Kazami are notably embarrassed when May starts hugging and even giving a kiss on the cheek to the Not So Stoic Hiroto during his breakdown in episode 20. May however doesn't seem to understand the potential implications of it, saying she simply did what her guardian said you should do when someone is sad.
• Younger Than They Look: Despite looking like she's in her late teens, May is around 2 years old at best, being born sometime after the original Build Divers and the beginning of Re:RISE which takes place 2 years later.

Kazami Torimachi / Kazami

Voiced by: Masaaki Mizunaka (Japanese), Ray Chase (English)

Gunpla: ZGMF-X19AK Gundam Justice Knight, Justi'gguy, GAT-X303K Gundam Aegis Knight, ZGMF-X42S Destiny Gundam (GBD Battleogue Only)

^{Click here to see his real life appearance}

A G-TUBE streamer and a seasoned Diver who aims to be a hero like his idol, Captain Zeon, while crossing various parties. However, although he has terrible coordination and lacks praise for his achievements, he enjoys Gunpla Battle Nexus Online.

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• And You Thought It Was a Game: The reveal that Eldora was Real After All hits Kazami hard, especially since he thought he was just playing in a story campaign. This leads to him feeling great remorse for his all of his antics up to this point. The silver lining to all of this, however, was him realizing that Maiya is real, which ultimately gives him the motivation to return to Eldora.
• Ascended Fanboy: In the final episode, not only does Kazami get to battle alongside Captain Zeon during Alus' assault on GBN, Kazami even gets to team up with both Captain Zeon and Patrick Colasour afterward.
  • Made even better is the fact that according to "Hobby Hobby Imaging Builders Ver. C.Z.", Captain Zeon actually knew who Kazami was prior to their official meeting and that he was a big fan, though decided it was too soon to contact him. Though the former decided to go out of his way and build an "unauthorized" partner to compliment Kazami's Justice Knight - the Gundam Freedom Knight◊.
• The Atoner: By the second season he decides to redeem himself for his terrible blunders that killed a lot of Eldorans by choosing to return, even if he knows his life would be at great risk, and protect everyone, most of all Maiya.
• Becoming the Mask: After realizing that Eldora and everyone on it is entirely real at the end of Season 1, Kazami actually begins to become the kind of selfless Ideal Hero he had previously only claimed to be.
• BFS: The Aegis Knight can transform its shield into a giant beam saber, like Kyoya or Captain Zeon.
• Butt-Monkey: He's the most relaxed and comic relief of the Build DiVERS team members and episode 2 alone has him get blown up at least five times due to his poorly thought out Attack! Attack! Attack! strategy.
• Calling Your Attacks: Frequently. This would be normal in the Gundam Build Divers universe, to mark the activation of a Secret Art. The main problem is, he doesn't have any. He finally gets to play it straight with the Aegis Knight's super move, King Mode.
• Character Development: By Season 2 he has largely lost his braggart attitude, replaced with a genuine desire to protect the people of Eldora. This is reflected with his Mid-Season Upgrade of the pure-offense Justice Knight into the Aegis Knight with its increased defensive capabilities (which has another layer in that the Aegis is an older, inferior machine in the show it's from, which has no effect on its performance in GBN but emphasizes that he's going for specific mechanical usefulness over glitz and glamour).
  • Easily the crowning example: Throughout Season 1, he maintained his G-tube series, and was constantly conscious of his viewership, or lack thereof. Fast forward to episode 23, and due to Magee sharing the videos he made up to the battle in space as a means of rallying GBN into defending Eldora, he finally has the huge number of views and even fans that he once craved. The difference now is, he's just more taken aback by it than anything else, not even really reveling it. Especially when he admitted he hadn't really been paying attention to his show since the space battle.
• Close-Range Combatant: Because the Gundam Justice Knight's only ranged options are either low-caliber beam guns on the Shot Lancer or launching the Shot Lancer itself (which will deprive Kazami of one of his only two weapons), Kazami has to fight up close.
• Cute Machines: His Justi'gguy is a modified Petit'gguy that resembles his main mech.
• Disappeared Dad: Apparently on a fishing expedition when he was a much younger boy and is implied to have not been back since. Tragic too, since the flashbacks we see show they were pretty close, and it's how Kazami got into Gunpla in the first place.
• Easily Forgiven: For accidentally blurting to Alus about the Eldorans and Seguri, causing him to fire on the island, Kazami thinks he doesn't deserve forgiveness from the Eldorans, let alone Maiya's, since his blunder got so many people, including her brother, killed. However, Maiya doesn't hold it against him at all, knowing he's legitimately apologetic and that he's changed for the better since last they met.
• Gender-Blender Name: "Kazami" is usually a female given name in Japanese.
• Glory Seeker: Pretty much the reason for his Leeroy Jenkins approach in battle is that he wants as much glory and rewards as possible. This is pretty much gone by the second season, after learning that Eldora is Real After All in the worst way possible, replaced by a new motivation to fight. He eventually becomes self-aware enough to give a reason why: as a kid, he was a fast learner and got called a fishing prodigy, but grew up to be a normal guy and never got over not being treated as a big deal anymore.
• Heroic BSoD: In Episode 12, the failure of the team to stop Alus's Kill Sat, leading to the deaths of those in the Resistance and the destruction of the village, starts to break Kazami badly as he refuses to believe that his actions have consequences and that what they're dealing with has to be a game. It gets worse when he and the others learn that they could suffer the same fate as Masaki Shido, the Seltsam pilot, especially as his thoughts drift towards Maiya.
• Hidden Depths: He ends up coordinating the team during the final attack against the One-Eyes' aquatic manta-like Mobile Armor, directing it like the steps of filleting a ray, and refers to himself as a "man of the sea", which he quickly retracts, as if embarrassed.
• Interspecies Romance: Kazami seems to have a growing affection towards Maiya, a seemingly virtual anthropomorphic Cat Girl, as they interact more and more with each other giving subtle hints here and there. In Episode 13, when he ponders on the realization that Eldora is Real After All and that returning to it may put their lives at risk, his thoughts are solely of her. She becomes his primary reason for going back to help Eldora because he doesn't want to see her cry, although he tries to take it back when he absentmindedly mutters that in front of the party. The two are pretty much together by the epilogue, given the fact that Kazami is ahead of his teammates and Hinata when they visit.
• Irony:
  • Kazami berates his teammates for bringing an entire arsenal of unorthodox, un-Gundam like Gunpla into the mission battles. Come episode 10, he brings a Justice Knight themed Justi'gguy as a spare mech. Granted, he brought said Gunpla for menial tasks rather than for combat.
  • His Mid-Season Upgrade from the Justice Knight to Aegis Knight is, nomenclature-wise, a reversal of Athrun Zala's change of Gundams from the Aegis to the Justice.
  • Originally, Kazami was a Glory Seeker, trying to get massive amounts of views on his videos and checking his G-Tube page frequently. When he finally does get a major view number and following (thanks to Magee)? He didn't even notice initially due to being so preoccupied with Eldora.
• It's All My Fault: He really doesn't take the nuking of Seguri well. Maiya doesn't hold the mistake against him, but he's still visibly shaken up by it.
• Leader Wannabe: Though constantly claiming to be team BUILD DiVERS leader, he is the least skilled, the least tactical, and has arguably the most problems with being a team player out of any of the four protagonists initially. This was somewhat downplayed during the second season, as the Character Development that he received makes Kazami grow into a better team player, to the point where Mays does comment that Kazami "sounded like a leader" by Episode 21.
• Logical Weakness: The Justice Knight is based on the Infinite Justice, a Gundam defined by its ludicrous amount of weapons. However, the modifications Kazami made to create the Justice Knight removed most of them to better suit the knight aesthetic^note The Justice Knight has three total armaments compared to the Infinite Justice's twelve individual weapons, creating a machine with more looks over function, and thus severely limiting his options. His Mid-Season Upgrade, the Gundam Aegis Knight, solves this issue as stated below.
• Luckily, My Shield Will Protect Me: The Justice Knight's shield sees a lot of use in Season 2 by more than just Kazami himself. In fact, it's one of the most effective shields the team has, capable of surviving shots from the Alus Earthree's incredibly powerful rifle. It's implied that the great use of the shield is what inspires Kazami to place a heightened emphasis on defense when he upgrades his Gundam into the Aegis Knight, appropriately named after the impervious shield of Classical Mythology.
• Mid-Season Upgrade: In season 2, he goes from his original Justice Knight Gundam to the more powerful Aegis Knight Gundam, which incorporates more beam weapons, an upgraded shield, and shot lancer, and 2 transformation modes. Amusingly, the Infinite Justice Gundam his first Gunpla is based on was actually a third-generation upgrade of the original Aegis Gundam that his second Gunpla is based on in the Cosmic Era universe, demonstrating that he's abandoning his ego and picking whatever has the tools for the job he needs.
• Minor Living Alone: His real-world time is spent either on his fishing boat or an apartment, with nobody else around him (any scenes he shares with the real world Build Divers are the only times he's around anyone).
• No Range Like Point-Blank Range: Succeeding where its inspiration failed, the Aegis Knight's first use of the "Scylla" beam cannon has it clamp on the Fake Nu and then blast it to bits.
• Nominal Hero: Despite claiming he wants to be a hero like Captain Zeon, he is selfish, greedy, vain, and doesn't try to role-play a hero at all in missions, happy to blow up an entire village of helpless bystanders if it means clearing a mission. In fact, the only heroic thing he seems to want to do is striking cool Ass Kicking Poses. Episode 6 suggests that his desire to be like Captain Zeon clashes with the reality of Captain Zeon, who actually loses from time to time and he can't stand that fact. Episode 7 confirms this, as he is forced to watch the ending to a new episode of Captain Zeon and see that, even when faced with defeat, he'll keep fighting.
• Real Men Wear Pink: Kazami, whose avatar is a muscular man with a Heroic Build and uses a Gundam styled after a Knight in Shining Armor, also wears a pink outfit with long gloves that reach up to the shoulders. He also owns a Petit'gguy, which is rare among male players.
• Red Oni, Blue Oni: Kazami is the red to Hiroto's blue, being headstrong and hot-blooded in contrast to Hiroto's calm and calculating nature.
• Saying Too Much: Ends up blurting out quite a bit of critical information regarding the Resistance right in front of Alus who then responds by revealing the whole moon to be a huge Kill Sat and promptly firing it, annihilating Seguri and most of the Resistance in one fell swoop. Justified in that Kazami thought the fighting in Eldora was a video game, and that the people were just NPCs.
  • Played for Laughs whenever he divulges some personal information like his fishing background or his potential feelings for Maiya.
• Shout-Out: Based on how his old Force members are based on characters from Journey to the West, then it's likely that Kazami is based on Zhu Bajie, the pig demon. Like him, he's a glory hog, who often caused trouble for the group due to his blowhard attitude. However, while Bajie never really loses these tendencies, Kazami outgrows them.
• Small Name, Big Ego: If you listen to him, he's a top tier Gunpla builder and fighter who fought alongside the likes of Avalon and the original Build Divers. It's best... not to listen to him. Ironically reversed by the last few episodes. He finally has the fame and the chance to team up with Captain Zeon like he always wanted, and he can legitimately claim to have fought alongside said Forces, but such was only gained after losing his ego and becoming an actual selfless hero.
• Stay with the Aliens: Subverted. It's implied that Kazami tends to hang around Eldora more often than the others, given that he's ahead of his teammates and Hinata when they visit, but he's obviously not stuck in Eldora like the trope indicates. It helps that since Kazami is a Minor Living Alone, Eldora has become a second home for him.
• Super Mode: Averted. Aegis Knight's King Mode might look like this, but the Gunpla's manual states that it's just flair for when he uses his massive beam sword.
• A Tragedy of Impulsiveness: The entire first half of the series can be chalked up to Kazami's Glory Seeker attitude.
• Unskilled, but Strong: Zig-Zagged heavily. Kazami has an incredibly poor showing early on due to his Glory Seeker mindset making him charge in and showboat instead of fighting effectively. When Kazami realizes his idol, Captain Zeon, is as cool as he is because of his determination and not because of an aura of perceived invincibility, Kazami's performance increases dramatically. Even surviving his ill-thought attempt at taking out Alus in the battle at the Satelite Weapon relatively unscathed and taking out numerous enemies. After learning that Eldora is Real After All, he stops showboating entirely and grows to be even more effective.
• Unwitting Instigator of Doom: Unwittingly Saying Too Much to Alus about the world below in Episode 12. The Eldorans already had enough trouble with the One-Eyes before Alus fired a Kill Sat on them. Once he learns that the virtual world was real, Kazumi strives to atone for his actions.
• Younger Than They Look: Despite his online avatar's Heroic Build making him look like an adult, the actual Kazami is a Bratty Half-Pint even younger than Hiroto.

Patrick Alexandre Leonard Arge / Parviz

Voiced by: Mayu Minami (Japanese), Laura Stahl (English)

Gunpla: Metal Changer Valkylander, Avalanche Rex Buster, Saint Metal Changer Ex Valkylander, XXXG-00W0 Wing Gundam Zero [EW Ver.] (GBD Battleogue Only)

^{Click here to see his real-life appearance}

A newbie who just started Gunpla Battle Nexus Online at the recommendation of a respected brother, he has a strong desire for party play and the formation of a force that is the best of online games, but he is still inexperienced because of his withdrawn and diligent character. He is also the younger brother of Ruck Arge (Shahryar), a veteran GBN player.

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• Always Someone Better: Admits having this feeling in episode 22, in regards to his other siblings (especially Shahryar), compounded by the pressure that comes with being the heir to the Arge family.
• Beam Spam: Is a firm believer in large-scale energy weapons, just like his big brother Shahryar. Parviz's Avalanche Rex Buster is a three-barrel variation.
• BFG: A beam-based variant, per above—the Avalanche Rex Buster is an enormous triple-barreled energy cannon and possibly larger than the core Valkylander unit when its barrels are extended.
• Composite Character:
  • His Valkylander is a combo of a GNY-001 Gundam Astraea, a Gundlander, and a fire breathing dragon.
  • Parviz himself is based appearance-wise on Shahryar and character-wise on Mamoru Izuna from Gundam Build Fighters Try (both are kids with crippling health conditions but genius building skills).
• Handicapped Badass: Outside of GBN, Par is shown to be confined to a high-tech wheelchair. He doesn't seem to mind though: as he tells the Divers, he can do most things by himself, and when processing the fact that Eldora is real, he's more surprised to realize that he was actually flying Morgiana instead of actually walking.
• Hates Being Touched: Played with. He isn't exactly comfortable when Asha, Towana, & Hulun began petting and rubbing his tail the first time. He doesn't seem to mind in the next episode.
• I Call It "Vera": While the name of his Gunpla is still "Valkylander", he also commonly refers to it as "Morgiana". He also frequently talks to Morgiana to the point where he feels it communicates back.
• Improbable Age: He's a young kid, and yet was able to fly a glider unassisted not that long ago. Granted, he's shown to be a competent pilot, and only crashed the way he did after a flock of birds flying into the plane prevented him from avoiding the thunderstorm that caused him to crash and be crippled.
• Lightning Bruiser: Once he gets his groove on, the Valkylander in SD form can fly and hit with blinding speed. And when it's Gundrans-Am System is activated, it leaves afterimages with considerable gaps between them, meaning the Valkylander is going considerably faster than most units equipped with Trans-Am.
• Little Bit Beastly: Like Shahryar, his avatar has animal ears and a tail.
• Mecha Expansion Pack: Episode 10 sees him deploy the Avalanche Valkylander, which tacks on an Avalanche Exia-like armor pack along with an external glider based on the Valkylander's dragon form.
• Mid-Season Upgrade: In season 2, he upgrades his Valkylander to the Ex Valkylander, which incorporates more armor, an upgraded propulsion system, and a more powerful GN drive.
• Mistaken for Badass: The Eldoran natives identify the Valkylander as "the sacred beast" due to its resemblance to Cuadorn.
• Not Disabled in VR: Nor on Eldora, as it turns out.
• Playing with Fire: The Valkylander's default attack is its flame breath.
• Shrinking Violet: Is very shy, visibly struggling to talk to Kazami at first.
• Super Mode: Episode 22 reveals that the Valkylander has its own form of Trans-Am, the Gundrams-Am. However, a combination of lack of proper testing of the mode and Par's lack of experience means that the controls end up too sensitive for Par to use it properly.
• Suspiciously Similar Substitute: He's one of Shahryar / Ruck Arge's younger siblings and uses the same Little Bit Beastly white-haired, dark-skinned type of avatar, the same Color Motif on his clothes, and the same Arabian Nights Shout-Out naming scheme. He also favors customized Gundam 00 suits with a Wave-Motion Gun super move, just like his brother. The Strong Family Resemblance is also evident in their real-world appearances.
• Too Fast to Stop: When he activates the Gundrams-Am system for the first time it ends up making Morgiana near uncontrollable due to the ridiculous speed boost which results in him face-planting into the ground after an opposing Arche Gundam simply dodges his attack.
• Trauma Button: Early on, flying, as a result of a glider he was piloting flying into a storm and crashing, leaving him wheelchair-bound.
• Wave-Motion Gun: The Avalanche Rex Buster, again. Like Shahryar, Parviz's most notable ranged weapon is a beam cannon bigger than his Mobile Suit that in turn fires a beam several kilometers long, approximately ten times the height of the unit firing it. It's as devastating as it sounds.
• Weak, but Skilled: His piloting skills may leave much to be desired, but Hiroto notes that his building skills are well above average.
• Why Did It Have to Be Snakes?: Parviz is terrified of heights. It proves to be a major stumbling block of his since he can't force himself to get Valkylander to fly.
• Willfully Weak: Valkylander was customized for fighting in the air and is actually something of an aerial powerhouse. But Par's fear of flight means that for the first arc of Season 1 he's effectively limited to running and poorly aimed dragon fire.

Eldora

Mountain-Dwellers

Freddie

Voiced by: Ai Kakuma (Japanese), Lizzie Freeman (English)

Gunpla: PFF-X7II/S6 Saturnix Gundam (armor unit only)

A young boy who calls the "Creators" to stop the One-Eyes.

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• Achievements in Ignorance: Was somehow able to get technology that was sitting in a temple for thousands of years to work and use it to hack into GBN, making it resemble a Story Mission.
• Annoying Younger Sibling: Is seen as one to Maiya, who scolds him for venturing to the ruins in the first place.
• Ascended Fanboy: The After Stories anthology released with the show's Blu-Ray box reveals that Freddy gains the Saturnix Armor for himself as Hiroto makes him its test pilot.
• Big Brother Worship: Freddie adored his big brother Jed.
• The Chooser of the One: An odd example. He was looking for the original Build Divers team, but Kazami was accidentally Screening the Call, meaning Build Divers ended up Missing The Call while BUILD DiVERS just Stumbled Into the Plot.
• Mr. Exposition: He's the one who explains to the BUILD DiVERS the details about Eldora.
• Talking the Monster to Death: During the final battle, Freddie finds an opportunity to speak to Alus. Despite everything the latter had done, Freddie still finds it in himself to sympathize with him, and even thanks Alus for protecting Eldora in the past, before proclaiming that his people will continue to care for the planet. This starts an emotional breakdown in Alus that eventually makes him decide to recklessly invade GBN, leading him to teleport right into their trap.

Maiya

Voiced by: Yuna Mimura (Japanese), Brittany Cox (English)

Freddie's older sister, she is a woman of the mountain people who takes good care of her family and has a strong sense of justice. Because of that, it is also a character that does not make many jokes.

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• Cat Girl: One of the rare kind in an anime where she leans more toward feline than the mostly human-looking variety.
• Drives Like Crazy: If Kasami's reactions in Episode 15 are any indication. He outright calls her someone "who becomes totally different behind the wheel."
• Supreme Chef: Every time someone has eaten her meals, the reaction is always of satisfactory and praise towards her cooking skills. Even Cuadorn, a mystical dragon that does NOT need to eat actually thought her meals were delicious.

Stola

Voiced by: Kotomi Aihara (Japanese), Aleks Le (English)

One of the people of the mountain, and a childhood friend of Maiya. Although he wants to enter the resistance with his cunning personality, he's held back by Jiric.

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• Big Brother Worship: Stola looks up to Jed.
• Character Development: Spends the first season chomping at the bit to join the front lines, but after the disaster at Seguri, he quickly and wholely embraces the role of protector that Jed had been trying to instill in him.
• Expy: Of Hush Middy, down to the hair color.
• The Bus Came Back: Or a truck in this case. He was being escorted back to the village by Calico and Zabun when Alus fired his Kill Sat, and disappears from the plot for just 2 episodes.

Asha, Towana, & Hulun

Voiced by: Yūki Takada (Asha), Asuna Tomari (Towana), Michiyo Murase (Hulun) (Japanese); Michelle Marie (Asha), Julie Ann Taylor (Towana), Dorah Fine (Hulun) (English)

From left to right: Asha, Towana, and Hulun

Three kids from the Mountain Village who are always together.

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• Expy: They're likely based on Katz, Letz, & Kikka from the original Mobile Suit Gundam.
• Furry Reminder: They're the most likely to attack someone they don't like by biting them.

Tonoi

Voiced by: Kan Tanaka (Japanese), Kevin M. Connolly (English)

He serves as the mayor of a mountain village and is the father of Freddie and Maiya. He is a person who respects all people and listens sincerely to the claims of everyone.

Jiric

Voiced by: Kōichi Sōma (Japanese), Jason Marnocha (English)

He is a very influential person, among the people of the mountain. He is the grandfather of Hulun and has a pasture near a large valley.

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• Bad Ol' Badger: A crusty old salt-of-the-earth type with a generally sour disposition, Jiric is quite appropriately a badger (which is also oddly ironic since he's also a farmer).

Resistance

Jed

Voiced by: Junichi Yanagita (Japanese), Xander Mobus (English)

Freddie and Maiya's older brother, he is very brave and reliable. A platoon leader in the Resistance, he has been fighting against the One-Eyes.

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• Big Brother Mentor:To Freddie, Maiya, Stola and serves as kind of an older brother figure for the village's kids.
• Character Death: He, along with everyone else in Seguri, were annihilated by Alus's Kill Sat in Episode 12.
• Dead Person Conversation: To both Freddie and Stola in Season 2.
• Nice Guy: To everyone around him. Except for the One-Eyes.
• Spirit Advisor: Appeared as a ghost to Freddie and disembodied voice to Stola in Season 2.

Calico

Voiced by: Kōji Okino (Japanese), Joe Zieja (English)

One of the vice-captains in Jed's platoon, he prides himself on being a warrior of the Resistance.

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• The Bus Came Back: He and Zabun were escorting Stola back to the village when Alus fired his Kill Sat. They reappear 2 episodes later.
• Those Two Guys: with Zabun. They even disappear and reappear between seasons at the same time!

Zabun

Voiced by: Shunichi Maki (Japanese), Tony Oliver (English)

One of the vice-captains in Jed's platoon. He has an easygoing demeanor and is a competent fighter.

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• The Bus Came Back: As mentioned above, he and Calico were escorting Stola back to the village when Alus fired his Kill Sat, then show up alive and well 2 weeks later.

Gorus

Voiced by: Taro Yamaguchi (Japanese), Brook Chalmers (English)

The Resistance's leader, his stone eye-patch tells of fierce battles against the One-Eyes.

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• Sole Survivor: As he was at the Orbital Elevator when Alus fired his Kill Sat, Gorus is one of the few high ranking members of the Resistance left.

Muran

Voiced by: Shinji Kawada (Japanese), Jordan Reynolds (English)

A Resistance platoon leader, he was skeptical of Hiroto and the BUILD DiVERS due to an experience he had in the past.

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• I'm Dying, Please Take My MacGuffin: We last see a badly injured Muran in Season 1, making Freddie give the BUILD DiVERS a pendent that he says is "the last remaining key to turn the tide."
• Pals with Jesus: Happens to be on a first-name basis with the Sacred Beast Cuadorn.
• Took a Level in Kindness: When we first meet him in Season 1 he's still angry and sore over being let down before, feeding into his hate for any offworlders - after witnessing the BUILD DiVERS in action, he's finally come around to become their strongest supporter by Season 2. He also learned that Masaki didn't betray them of his own volition.
• You Are in Command Now: As of Season 2 he's the highest-ranking Resistance officer left.

Abiree

Voiced by: Hideyuki Umezu

Abiree is a commander of the Resistance and is the head of the Resistance in the water city of Seguri.

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• Character Death: He, along with everyone else in Seguri, were annihilated by Alus's Kill Sat in Episode 12.

Lobochi

Dressed in a Western-style suit, he is one of Seguri's influential Resistance figures.

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• Character Death: He, along with everyone else in Seguri, were annihilated by Alus's Kill Sat in Episode 12.

Isai

A slender and tall man with a fan, he is one of Seguri's Resistance leaders.

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• Character Death: He, along with everyone else in Seguri, were annihilated by Alus's Kill Sat in Episode 12.

Donjo

One of Seguri's Resistance leaders with a wide physique, he carries a cane with a characteristic ornament.

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• Character Death: He, along with everyone else in Seguri, were annihilated by Alus's Kill Sat in Episode 12.

One-Eyes

Gunpla: Guard Eye, JDG-009X-EL Eldora Army, DT-6800EL Eldora Daughtress (Eldora Psycho Daughtress), JDG-009X-ELB Eldora Brute (Eldora Bull Brute, Eldora Hover Brute, Eldora Air Brute, Eldora Sea Brute), GAT-04EL Eldora Windam, ovv-afel Eldora Danazine

The One-Eyes are a mysterious enemy force and are the antagonists of the series. They're presumed to be Non-Player Diver units. Until episodes 12 and 13, that is.

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• Combining Mecha: Before the advent of Gunpla bodies, Guard Eyes were only able to escalate the battle by latching onto each other with their limbs, creating shapes and structures akin to molecular diagrams, or Sakkakumon from Digimon Frontier.
• Crippling Overspecialization: Two of the One-Eyes Gunpla suffer from this.
  • The Eldora Daughtresses are powerful at long range, but have no close-ranged weapons and are very weak to melee attacks.
  • The Eldora Sea Brute is unparalleled in underwater combat, even giving Hiroto in the Mercuone Gundam a hard time, but once it's forced out of the water and onto an ice flow, it's basically a sitting duck.
• Cyber Cyclops: With a couple of exceptions, all of the One-Eye forces have, well, one eye, which is what the villagers and Resistance call them. The AI cores that serve as their 'pilots' also count - they're giant mechanical eyes with a set of articulated tentacles as limbs.
• Evil Knockoff: The One-Eyes were originally simply the tentacled eyeballs. Alus got access to GBN data after capturing Masaki, and used it to reproduce the game's Mooks for his own purposes, resulting in all those very familiar mobile suits our heroes have to fight.
• Expy: They're both visually similar and play the same role as the Death Army in Mobile Fighter G Gundam, being monocular antagonistic autonomous Gundam units that possess unique land, air, and sea variants, under the control of a malevolent AI. As bonus points, all of the early One-Eyes encountered are Death Army grunts, though Alus eventually expands them to a wide variety of Gundam mooks.
• Giant Mook: The strongest One-Eye that isn't directly under Alus's control turns out to be the "Psycho Daughtress", a kitbash of the standard Federation mook from After War Gundam X and the massive superweapon from Mobile Suit Zeta Gundam. It's fairly sluggish but has massive firepower and hands big enough to just crush your average mobile suit.
  • Before the "Psycho Daughtress", there was the Eldora Sea Brute, which was a giant, Manta Ray design variant of the normal Mook guarding the seas around the Silver Tower, a Space Elevator.
• Heel–Face Turn: With Alus's destruction, the few remaining One-Eyes become entirely docile. In The Stinger of the finale, one even takes up Calico and Zabun's offer to join them since it has nowhere else to go.
• It Can Think: They're not geniuses, but they're a bit smarter than you might reasonably expect for game NPCs. After The Reveal, it turns out that they actually are piloted by beings capable of some measure of independent thought. However, they're still combat AIs with sentience but no real sapience, like social, predatory animals.
• Mecha-Mooks: They're AI-piloted mobile suits, although the Build Divers were Right for the Wrong Reasons when they assumed this.
• Mook–Face Turn: After Alus's death, at least one of the remaining One-Eye pilots gets convinced rather easily to live peacefully with the new Eldorans, and later is seen with the various new Eldorans at the Gunpla Battle Battle Royal viewing party in Battlelogue.
• Mythology Gag: The One-Eyes' grey color scheme with purple optics seems to be a nod to the ELS-assimilated GN-X units from Gundam 00 Awakening Of The Trailblazer.
• Only Known by Their Nickname: Promotional material lists them as "Eldora", but the villagers and Resistance refer to them as "One-Eyes".

The Masked Man (Masaki Shido / Sid)

Voiced by: Soma Saito (Japanese), Griffin Burns (English)

Gunpla: MSF-007TE Gundam Tertium, MSF-007SS Gundam Seltsam, MSF-007TE Advanced Gundam Tertium

^{Click here to see his original avatar}

^{Click here to see his real life appearance}

A Diver working with the One-Eyes and against the BUILD DiVERS. He is eventually revealed to be a Diver named Masaki "Sid" Shido, who had previously worked with the resistance, before disappearing on Eldora and falling into a coma on Earth six months before the story began.

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• The Ace: Prior to his brainwashing, Masaki was a powerful Diver that was listed as an S-Rank pilot and some of his accomplishments being defeating a thousand enemies by himself and five hundred Leo NPDs in a Restricted Weapon match.
• And I Must Scream: Masaki got captured, brainwashed, and his consciousness stolen by Alus six months before the series' story begins. While his body is still on Earth, his stolen consciousness is being used as another weapon against the Eldorans. This is even worse when you consider Masaki once fought alongside the Eldorans. Once Alus' control is damaged enough for Masaki to start resisting, he's constantly and literally screaming in pain from the mental strain in doing so. And by the time he comes back to his senses, he shows that he remembers all the destruction he wrought against his will and is clearly guilt-ridden about it.
• Barbarian Longhair: Deliberately invoked. As Alus's savage enforcer, he wears a helmet with a mane of artificial red hair. His in-game avatar's actual hair is also quite long, but it's the finely-groomed locks of a High Fantasy hero rather than a shaggy mess.
• Bash Brothers: Upon returning to GBN in Episode 25, he and Cuadorn team up in taking on Alus's armies while BUILD DiVERS directly takes aim at his lunar cannon, and later destroying it completely to permanently trap Alus inside GBN.
• Batman Gambit: Realizing that Alus still cannot be reasoned into standing down, Masaki provokes him into attacking GBN, leading him into a trap with almost all of its Gunpla divers lying in wait.
• Big Little Brother: He's a full head taller than his several years older big sister.
• Bilingual Bonus: Tertium Gundam is a custom Gundam Mk-III. Tertium is a Latin word for "third".
• Blow You Away: The Seltsam's lance can fire powerful shockwaves that can easily send other Gunpla flying away.
• Cavalry Betrayal: After being summoned, he turned on the NPCs and allied themselves with the One-Eyes. It causes grief for some Resistance members like Muran, making him severely mistrust BUILD DiVERS. It's eventually revealed he actually was captured by Alus and Reforged into a Minion.
• Composite Character: His original Gundam Tertium combines a Gundam Mk-III from the Mobile Suit Zeta Gundam Mobile Suit Variations with the colors and stylings of the Gundam "Alex" equipped with Chobham armor from Mobile Suit Gundam 0080: War in the Pocket.
• Curbstomp Battle: Hands the BUILD DiVERS their asses within seconds of appearing. The only reason they even got away is because of Hiroto sacrificing his armor pieces to serve as a distraction.
• Evil Costume Switch: Went from a silver and blue Knight in Shining Armor ensemble to a black purple and red outfit masked Dark Knight after becoming part of Alus's forces.
• 11th-Hour Ranger: Fights alongside BUILD DiVERS in the final space battle in orbit around Eldora, and personally tricks Alus into walking into the Coalition of Volunteers' trap in GBN. However, he only serves as Guest-Star Party Member along with Cuadorn, as he doesn't join the big battle in GBN after destroying Alus' mainframe to keep him trapped there.
• Extra Eyes: Has 5 eyes instead of the normal 2 on both their Gundam and their mask.
• Expository Hairstyle Change: His considerably longer hair after becoming part of the One-Eyes, vs the only shoulder length haircut he has in flashbacks, visually demonstrates just how many months he has been trapped against his will on the very real Eldora.
• Fighting from the Inside: Somewhat. As a result of the Jupitive stabbing the Seltsam's V-fin, a part of the device mind-controlling him, Alus' hold on Masaki had weakened enough that his real self begins to reemerge. This results in him turning on the Eldora Army while trying to save villages like he used to. However, he can barely control himself, is in constant pain and the mental strain is taking its toll on Masaki's mind, as well as his comatose body. It took Hiroto defeating the Seltsam—and ripping off its Red Right Hand—for him to finally return to his senses and awaken from his coma at the end of Episode 22.
• Good Costume Switch: He's naturally only too happy to get rid of his Black Knight armor and the purple/red color scheme on his Tertium after being released from Alus's control, as well as restore his original silver/blue color scheme.
• Heroic BSoD: After being freed from Alus's control, he suffers extreme depression over the Eldorans he hurt and killed against his will, and even exhibits potentially suicidal tendencies like driving his motorcycle through Yokohama while he can still barely walk and going up to the roof of the hospital treating him to stand right up against the railing.
• It's All My Fault: He thoroughly believes that he is not worthy of salvation after everything he did while under Alus' control.
• The Juggernaut: The Seltsam is one of the most powerful units the team faces on Eldora. To wit, it has overpowered the ground spec'd Earthree Gundam in ground combat, overpowered the close-range combat spec'd Marsfour Gundam in close combat, overpowered both the Veetwo weapons and the Valkylander in a Beam-O-War and defeated the space spec'd Jupitive Gundam in space combat. It's not until Masaki begins Fighting from the Inside and the team works together (with upgraded machines) that they are able to defeat it.
• Knight in Shining Armor: His original in-game avatar was a classic fantasy hero straight out of Record of Lodoss War or one of its many derivatives, with gleaming silver armor and lots of pointy white hair, and his Gundam fought with a massive Jousting Lance.
• Logical Weakness: The Seltsam is incredibly powerful at all ranges. However, high mobility units such as the Mobile Doll May or the Jupitive Gundam can simply avoid being hit, making battles much more even.
• Meaningful Name:
  • "Seltsam" is German for "strange", which fits with the Seltsam's odd appearance.
  • One reading of his real name is "upright lion cub", reflecting his original sense of justice but also lack of experience.
• Mechanical Abomination: Episode 22 has Seltsam's neck and right arm burst open and cover it with purple tentacles that make its already large Red Right Hand even bigger and more warped looking, and demonstrate even more insane destructive power.
• Metaphorgotten: In episode 23, he tries to brush off his muscle atrophy from spending 6 months in a coma by explaining hibernating bears don't suffer such extreme effects... and then later says Hiroto and co's Determinator attitude is like a wild bear... Kazami is outright confused about why Masaki is talking about bears, and when Masaki's sister Mizuki shows up, she gets incredibly annoyed with his total nonsense.
• Mind-Control Device: The modifications that made the Gundam Tertium into the Gundam Seltsam (The red Seltsam arm and the enlarged V-fin) are what's causing him to obey Alus at all. When Hiroto's Jupitive manages to land a hit on the V-fin in episode 12, it disrupts Alus' control enough for Masaki's real self begins to fight back, albeit not too successfully. And tearing off the arm entirely in episode 22 finally frees Masaki for good.
• Mecha Expansion Pack: Masaki upgraded the Tertium, which started out with no backpack and two beam rifles, with a backpack featuring a massive beam lancer and single-wing binder/buster launcher, and finally creates a space form by subbing in a new backpack with additional shields, boosters, and a beam smart gun.
• Nerd in Evil's Helmet: A tragic rather than comic example. He's an awkward, affable young man who got turned evil against his will by an evil AI, and is significantly less intimidating beneath all that scary armour.
• Only Mostly Dead: In episode 22 after spending 6 months in a coma and briefly flat-lining, his heart suddenly starts beating again thanks to BUILD DiVERS cutting his connection to Eldora and he finally wakes up.
• Outside-Context Problem: In more ways than one. Being summoned was one to Alus, who later defeated and took advantage of Masaki's outside context. Then when the Mountain Dwellers took refuge in the temples, Cuadorn notes that while Alus' normal units are unable to attack them due to being Eldoran constructs (and thus are hard-wired to leave the temples alone so the Ancients can return), the Seltsam is a GBN construct, so it can still attack the ruins.
• Punny Name: His online handle "Sid" is pronounced the same as his actual last name "Shido" in Japanese.
• Red Right Hand: Literally. His Tetrium's Evil Costume Switch into the Seltsam included replacing its normal-looking right arm with a massive, demonic-looking red one. In addition to being powerful, the arm has a double-hinge joint at the elbow that extends its already-impressive reach. It also happens to be the major component in Alus's control over Masaki, which, once torn away by Hiroto, fully frees him.
• Scary Impractical Armor: Wears a massive, ornate suit of armor complete with a giant red wig when piloting the Seltsam, which is doubly impractical since he's got a whole Gundam in between him and any incoming damage. It turns out to be a prison keeping him under Alus's control, rather than anything meant to protect him.
• The Unchosen One: Like the BUILD DiVERS after him, Masaki's appearance in Eldora was a mistake in Cuadron's part during his attempt to reach the Ancients; nevertheless, Masaki chose to be the planet's champion of his own free will.
• Used to Be a Sweet Kid: In episode 13, it is revealed that he was actually a very nice person before he was captured and Reforged into a Minion.
• Wave-Motion Gun: The Seltsam's rifle can fire an absurdly large and powerful laser blast.
• Whole Costume Reference: His uncorrupted avatar with long white hair, headband, silver armor, and blue clothes, is basically a copy of Balmung of the Azure Sky's own avatar from fellow Bandai Namco Entertainment VR MMO franchise .hack. Rather fitting, given that for most of his appearances he filled in the GBN equivalent of a Lost One.

Alus (Unmarked spoilers ahead)

Voiced by: Akira Ishida (Japanese), Austin Lee Matthews (English)

Gunpla: AGP-X1 Alus Core Gundam, AGP-X1/E3 Alus Earthree Gundam, AGP-X1/NU Fake ν Gundam, Dubious Arche Gundam, Reverse Turn X

"Why are you interfering? My duty is to protect this planet... My duty is to protect this planet... My duty is to protect this planet..."

Stationed on Eldora's geostationary moon, Alus controls the One-Eyes the BUILD DiVERS have been fighting on Eldora's surface. While initially seen as the "goal" in order to beat the new GBN Story Mission, it is revealed that Alus is actually a highly-advanced AI whose campaign of genocide in the name of "protecting the planet" is all too real.

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• Achilles' Heel: While Alus' Gundams are insanely powerful opponents to fight against, one well-placed shot to the head will disable the whole Suit due to the control unit being housed in it, a trait shared by all Eldora Mobile Suits.
  • The Dubious Arche also has a crippling weakness - its GN Drive. Because of its inability to shut down Trans-Am when being used, it ends up overloading its engine, allowing Parviz to destroy it.
• A Form You Are Comfortable With: Invoked. That purple guy you see there is just a hologram, which he can reshape into anyone as he sees fit, such as the Build Divers themselves.
• Alas, Poor Villain: For all the destruction he caused, Alus is ultimately a being driven by a heartfelt, albeit misguided, purpose to defend Eldora, even as he continues to yearn for the return of the Ancients to the exclusion of the new beings that evolved in the wake of their absence. By the time Hiroto and Riku finish him off, he is given a solemn sendoff, where he has a vision of two of the Ancients asking him to finally rest in peace.
• All Your Base Are Belong to Us: In episode 25, he invades GBN to cut the "people of the gunpla" off at the source... it doesn't go well for him, though he does manage to do some serious damage to the initial ambush force before reinforcements turn the tide against him.
• A.I. Is a Crapshoot: Given Cuadorn's opinion on the matter, Alus's creators most likely didn't intend their caretaker AI to turn genocidal when another sapient race showed up on the planet he was overseeing. Even apart from the evil he commits, he comes across as powerful but not especially sophisticated, which may be due to a flawed design and may be due to the unspecified degradation that he appears to have experienced (see I Was Quite the Looker below).
• Almighty Idiot: A broken, semi-sapient AI who unfortunately happens to be the closest thing Eldora has to a god.
• And Your Reward Is Infancy: At the end of the show, an infant EL-Diver is born from his scattered data, with only their purple eyes and a necklace with the One-Eyes symbol on it providing any sign that the baby was born from Alus's "sincere wish to protect Eldora."
• Attack! Attack! Attack!: The Alus Core, Earthree, Fake Nu, and Dubious Arche Gundams all forgo the shields of the units they're copying altogether. Instead, Alus seems to bank on the superior power and maneuverability his Mobile Suits have. It's so blatant that even Ogre and Tigerwolf, who both prefer brawny tactics, easily notice and deride it, and Par exploits this to outmaneuver the Dubious Arche.
• Barbie Doll Anatomy: He takes the form of a naked humanoid, with not much in the way of details.
• Beat Them at Their Own Game: During the battle in episode 25, the Gundams Alus controls are destroyed by the Build Divers pulling their own unique gimmicks against them.
  • The Fake Nu Gundam, who retains the original's Fin Funnels, is destroyed when Kazami pins it with his Gundam's Assault Combat Mode and firing a point-blank shot from his chest cannon, defeating it by, his own words, "becoming a funnel".
  • The Dubious Arche Gundam, which is equipped with its own Trans-Am system, is destroyed in a single strike by the Ex Valkylander once Parviz activates his own "Gundrans-AM" system.
  • The Reverse Turn X Gundam, which possesses the original's Detachment Combat abilities, is destroyed after May separates her Mobile Doll from her Wodom Pod+ to destroy one of its detached limbs, then remote controls the Wodom Pod to fling its other arm into its head.
• Big Bad: The commanding intelligence of the forces threatening the people of Eldora, and directly responsible for everything that goes wrong in the show.
• Blade Below the Shoulder: Instead of a traditional handheld beam saber, his Core Gundam can unleash a massive beam blade by channeling power directly through its hands, similar to the Garazzo's GN claws in 00.
• Broken Record: Whenever someone asks why Alus is doing what he does or tries to get him to see reason, he will simply repeat "My duty is to protect this planet" ad nauseam. It's enough to set off May.
• Came Back Wrong: Reactivates eons after taking major damage in a war between Eldora and an outside invader... with a corrupted version of his original Ridiculously Human avatar, and severely less mental and emotional capacity than he once possessed. Cuadorn, who knew him during the war, is shocked by his genocidal actions and him turning into a Broken Record when anyone questions him. Even Alus begins realizing that something is wrong with him given he consistently keeps losing against a far smaller enemy force than the armies he fought against in the past.
• The Cameo: Appears briefly during Episode 3's stinger, 8 episodes before his proper debut.
• Creative Sterility: He's got enormous manufacturing capabilities and enough tactical/strategic understanding and imagination to comprehend what weapons would be useful in a war and how to use them, but his ability to come up with wholly original designs is limited. It's why the art assets of a licensed Gundam video game let him massively upgrade his arsenal by creating variants on designs by human artists. It's that very same inability to think outside the box that ties to his inability to comprehend why he keeps getting beaten, or why he's even being opposed in the first place.
• Curb-Stomp Cushion: Initially finding himself outnumbered, Alus manages to likewise surprise the ambush force with his sheer firepower and directly attack the GBN servers themselves, even managing to deny Hiroto the use of the Earthree. However, Alus quickly loses the upper hand the moment reinforcements and even the admins arrive to undo his advantage and damage. He does manage to have a Last Villain Stand but only succeeds in taking Sarah's and May's Gunpla out of the fight before he's destroyed by Riku and Hiroto.
• Death Equals Redemption: At the end of the show, the mainframe holding him on Eldora is destroyed and he himself is deleted by Hiroto, May, Riku and Sarah in GBN. In his last moments, he sees the Ancients Eruhave and Shangra, and realizes he's finally found his friends again. Later, the BUILD DiVERS find a new infant EL-Diver possessing purple eyes and a necklace in their hand modeled after the One-Eyes.
• Death or Glory Attack: The Dubious Arche's Trans-Am, once activated, cannot be deactivated. Thus, unless it can defeat its opponent, its GN Drive will overload, leaving it a sitting duck.
• Deus est Machina: A planetary caretaker AI capable of brainwashing, large-scale matter creation, and interplanetary bombardment. For all intents and purposes, he's the god of Eldora.
• Didn't Think This Through: He certainly didn't if he seriously thought he would be able to defeat an entire network of thousands of human players, along with many AI far more advanced than him, that he had clearly observed for the longest time with the limited forces he brought with him, when just five, not even close to being among the strongest of these players, had been beating him on a regular basis.
• Dying as Yourself: He spends his final moments as his more human, more emotive self from eons ago when he fought alongside the Ancients, rather than the insane and corrupted featureless version he had become in the present.
• Even Evil Has Loved Ones: He loved the Ancients and it's implied that he's malfunctioning in part because he doesn't understand why the Ancients weren't there for him when he reactivated. He even laments on how the Ancients promised to return for him...only to not see them do so in over a millennia.
  Alus: Someday...WHEN WILL THAT BE?!?
• Evil Cannot Comprehend Good: As a result of being Obliviously Evil, combined with responding like a Broken Record. Moreover, he doesn't understand why he keeps losing, musing like a confused child. Even when defeated, he doesn't get it and just decides to go after the source of the people who keep opposing him...which turns out to be his dumbest move yet.
• Evil Knockoff: He created his own Core/Earthree Gundam to personally fight against the Build Divers. The Mobile Suit has most of the original Earthree Gundam's functionality, with the sole exception of dropping the shield. Later on, using the concept of Hiroto's "PLANETS SYSTEMS" armor, he creates "knockoffs" of the Nu, Arche, and Turn X Gundams by making armors based on them for his Core Gundams.
• Expy: Can be considered one to the Devil Gundam, the Mobile Fighter G Gundam's Big Bad. Both were originally created for benevolent purposes of the inhabitants in their respective world (Humans and Earth for Devil, the Ancients/Eldorans and Eldora for Alus) only to end up attacking said inhabitants as a result of their directives being warped after receiving critical damage and repairing themselves. Both are also the source of the villainous Mobile Suits the heroes have to fight, along with playing The Corrupter (The various DG Cell-infected Gundams for Devil, The Seltsam for Alus).
• Eyes Always Shut: His default holo-expression, except for a couple of vital moments. Like when he's firing up the Kill Sat.
• Fallen Hero: A heroic AI protector who lost far too much of his mind through decay and damage, ending up as a genocidal Mad God instead.
• Foil:
  • Can be considered one to its Expy, the Devil Gundam, as while noted the similarities in the trope above, the Devil Gundam was, well, a Gundam that was treated as a tool to be wielded by the antagonists, only to reveal as the show goes on that it's deceptively intelligent. On the other hand, Alus is a human-sized A.I, whose existence was relatively unknown until the Build Divers meet them, was treated kindly by its creators, and as the show goes on, shows that Alus loses most of his danger once the protagonists adapt to his tactics.
  • Can also be considered one to Hiroto. Both are defined by the loss of a loved one, the Ancients for Alus and Eve for Hiroto, and are composed by nature. Both had people reach out to them to comfort them, but while Hiroto opened up about his loss and came to terms with Eve's passing, Alus never listened and only found peace in his final moments.
• God Is Evil: See Deus est Machina. He's a broken, genocidal mechanical deity who serves as the Big Bad of the show and a source of unimaginable terror and suffering both despite and because of being a Mad God and Almighty Idiot.
• Gone Horribly Right: He was created by the Ancients to protect Eldora from invaders, but was put into hibernation due to sustaining a lot of damage. By the time he reactivated, the Ancients had left Eldora to explore the universe, while new life evolved on Eldora... ones he mistook for a new wave of invaders that his programming requires him to destroy.
• Heel Realization: After Freddie's Passing the Torch speech to him in episode 25, he realizes that the New Eldorans are natives and the inheritors of the Ancients legacy, rather than invaders. After his base is critically damaged, he even starts wondering what he was doing, and when he became like this, before Masaki's well-placed mention of "the people of the Gunpla" makes him decide to target GBN instead, deeming them the invaders and a danger to the New Eldorans.
• I Was Quite the Looker: Of a sort. Flashbacks in Episode 17 show that his original avatar had clothing and hair. And he certainly looked much less malevolent back then
• I Will Wait for You: He promised the Ancients that he would patiently wait for their return and to keep the planet safe for when that time comes.
• Kill Sat: His most dangerous weapon. Eldora's moon is built around it, and a single shot can obliterate an entire city, cause damage all over the world, and even (it is implied) cause mild but measurable electromagnetic disruption as far as our solar system thirty light-years away. Flashbacks shown in Episode 17 imply that it was originally created to fight off alien invaders. The good news is that he can't fire it again for another five hundred hours (roughly twenty days).
• Lack of Empathy: The core of the problem that makes him a Tragic Villain. His mind is too damaged and decayed for him to still be capable of empathy, and he can only think of his campaign against the Eldorans as pest disposal.
• Lightning Bruiser: The Dubious Arche Gundam is capable of going into Trans-Am unlike the Gundam it's designed after. This allows it to reach speeds that eclipses any Mobile Suit in play, making the Arche a particularly scary opponent to fight against.
• Mad God: See A.I. Is a Crapshoot and Deus est Machina. Alus is frighteningly powerful, but while he does have some low, animal cunning as a combat AI, he's barely sapient enough to count as a villain.
• Madness Mantra: Whenever questioned, to show just how broken and insane he is, he keeps repeating the exact same phrase, "My duty is to protect this planet."
• Mid-Season Upgrade: Adds a number of new suits to his forces in season 2, including his own customized Alus Earthree Gundam, and a second-generation grunt suit, the Eldora Windam.
• Morphic Resonance: His eyeballs share the same neon purple circles as the Eldora grunts' AI cores, and the face of his own Core Gundam.
• Obliviously Evil: He believes he's protecting Eldora—even if it meant brainwashing people, creating armies of war machines, and committing outright genocide against a people he mistook for invaders—and is genuinely shocked when Kazami tells him they're "getting in his way" because they're trying to protect the new Eldorans.
• Oh, Crap!: At the very end of Episode 25, he is visibly shaken when he realizes that almost all of GBN's Gunpla divers had been lying in wait for him and his armies.
• The Promise: It is implied that part of the reason he is so determined on carrying out his mission is due to some sort of promise he made that he is intent on keeping.
• Purple Is Powerful: His Core Gundam is purple and a bit taller than Hiroto's. On top of that, it's still a deadly foe even without the Earth Armor attached.
• Red Baron: Is called the "Nemesis in the Moon" by Cuadorn.
• Reincarnation: After he's killed, his sincere wish to protect Eldora and the GBN players' love for the virtual world give birth to a new EL-Diver who has a gem that resembles one of Alus's eyes.
• Sinister Surveillance: Not only is he able to observe everything that happens on the surface of Eldora, but he's also able to locate and observe the events in all of GBN, starting from the second Coalition War at the very least.
• Takes One to Kill One: The reason why Alus builds his own version of the Core Gundam and Planet System. Presumably, also the reason why his army is based on other Gundam units.
• Time Abyss: Alus watched over the planet from when it was a lifeless ball of rock after the Ancients left until new intelligent life evolved. This would have taken BILLIONS of years.
• Together in Death: When Hiroto and Riku destroy his avatar and send him to GBN's sea of data, he is finally reunited with the Ancients.
• Tragic Villain: Used to be a fully sapient AI who was the heroic, well-loved defender of his planet, but severe battle damage from a previous war and eons of decay left him as a broken genocide machine with little more than half-remembered glimpses of the person he used to be.
• Unskilled, but Strong: He may be an AI of godlike power, and he may have a basic understanding of warfare at all levels (from personal combat to campaign strategy), but he's never depicted as being especially intelligent. In particular, the heroes manage to delay his genocide for weeks by having the Eldorans evacuate into protected structures and creating a conflict in his programming for him to very slowly puzzle through. His attempts to use brute force by keeping the Dubious Arche Gundam in Trans-Am also ironically cause its defeat, since Alus's attacks and evasive maneuvers remain predictable, to the point where Par can fire long ahead of it and still hit it, while the strain on the GN Drive eventually causes it to break down.
• Villain Override: In the final episode, one of his Eldora Core Gundam was modified to be able to hijack Core Gundam's Earth Armor. Doesn't stop Hiroto from trashing said Mobile Suit with his mishmash of Planets System parts.
• Villain Respect: Alus finds Hiroto so efficient he specifically copies Hiroto's Core Gundam and PLANETS system armor concept for his own personal Alus Core Gundam and further uses a variety of Hiroto's tactics while fighting, having already spotted him in GBN some time ago.
• Villainous Breakdown: When the BUILD DiVERs fire the Grand Cross Cannon at him, he starts crying over his confusion as to why the Ancients never returned for him in over a millennia despite promising to do so. Not only does he refuse to stand down, but he even identifies Gunpla fighters as another set of invaders and angrily decides to invade and destroy GBN and all of them at once to ensure none will ever interfere with him ever again. Needless to say, they were counting on him to do this. When Hiroto and the GBN players put him on the ropes, he completely loses it and is reduced to screaming in absolute fury as he combines his Alus Core Gundam with the cobbled remains of the rest of his army in a desperate final attempt to destroy GBN.
• Walking Spoiler: His background and motivations, revealed in the second season, puts all his actions into perspective in a way that would otherwise make several of his entries white lines.
• We Used to Be Friends: Alus and Cuadorn once fought side by side to repel alien invaders who came to conquer Eldora. However, after Cuadorn tries to talk Alus out of his genocidal actions in the present, Alus outright attacks him. The two have been enemies ever since.
• Zeroth Law Rebellion: He was given a directive to "preserve Eldora", but only interpreted that as far as the original inhabitants. As such, he took up the mission of killing every new Eldoran on the planet.

Cuadorn

Voiced by: Takaya Hashi (Japanese), Bob Carter (English)

The sacred beast who lives in the ruins on Mount Milaag.

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• Artificial Limbs: Par eventually builds Cuadorn a new wing out of Gunpla parts in episode 21.
• Bash Brothers: In the final two episodes he and Masaki team up to take on Alus's forces while the BUILD DiVERS destroy the Satellite Cannon, and later blow up his mainframe on Eldora to keep Alus trapped inside GBN.
• Dark Is Not Evil: He possesses a mostly black color scheme, but is for all intents and purposes a benevolent deity to the new Eldorans.
• Drama-Preserving Handicap: He claims that he can destroy the Satellite Weapon on his own and is simply waiting for his injured wing to heal so he can make the trip. Whether or not this claim is true, he's still a powerful ally who's sidelined due to his injuries.
• Feathered Dragons: Well, at least his wings are feathered.
• Instant Runes: In battle, he can create a magic circle to summon a blast of lightning directly at his opponents.
• It's All My Fault: Blames himself for what happened to Masaki, as he was the one who brought him to Eldora. Furthermore, he also blames himself on all of the deaths that have occurred until now as he hesitated to take Alus down when he reactivated.
• Mercy Kill: Attempts to give one to Masaki. Hiroto is able to talk him down from doing so by reasoning that it will prevent Masaki from redeeming himself and weigh Cuadorn down with more guilt.
• Our Dragons Are Different: He resembles a dinosaur or pterosaur more than a traditional dragon but with whiskers and two feathery wings along with the four legs.
• Shock and Awe: Even weakened, he's capable of calling down bolts of lightning strong enough to give Alus a reason to retreat.
• Stab the Scorpion: After being convinced by Hiroto not to Mercy Kill Masaki, his charged attack seems to blast through Hiroto, but its instead targetting the One-Eye Gundams behind him.
• We Used to Be Friends: Once protected Eldora alongside Alus, and resolved to protect the new Eldorans, unlike his former ally.

The Ancients

Ellhave voiced by: Inori Minase (Japanese), Erika Harlacher (English)

Shangrah voiced by: Haruka Terui (Japanese), Kayli Mills (English)

The ancient race that the people of Eldora revere as the Creators, responsible for all the advanced technology scattered across the planet.

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• All There in the Manual: The names of the two Ancients we see are never given in-show, but their names are in the credits. They are named as シャングラ ("Shangra") and イルハーヴ ("Eruhave"). The dub credits spell them as "Shangrah" and "Ellhave".
• Brain Uploading: According to Cuadorn, this is what happened to them when they decided to leave Eldora. Specifically, their consciousnesses wound up in GBN, the final piece needed for the EL-Divers' genesis.
• Identical Stranger: Notice the suspiciously specific set of voice actors they have? It's because the two ancients we see are dead ringers for Sarah and Eve, and thus are voiced by their actors in both languages. Their names are even similar.
• Precursors: What they are. They avoid being Abusive Precursors because they didn't account for Alus going rogue and they did want better for the future generations on the planet.
• Small Role, Big Impact: Twofold. Despite not intending to harm future generations, they still created the rogue AI that now seeks to exterminate the present Eldorans. Likewise, it's their consciousness that became the EL-Divers that now populate GBN, leading to the events of the previous series as well.
• Together in Death: When Hiroto and Riku finally destroy Alus, he meets them in his final moments. Since the EL-Divers that these ancients clearly look like are pretty much new entities with no memories of their old life, they are considered "dead".

Gunpla Battle Nexus Online Divers

Eve (Unmarked Spoilers Ahead)

Voiced by: Inori Minase (Japanese), Erika Harlacher (English)

An EL-Diver that Hiroto once met in GBN. Their time together is one of Hiroto's most precious memories, and he longs to meet Eve again.

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• Apocalypse Maiden: Not originally, but she became a walking disaster waiting to blow after she started to absorb the various Dark Sarahs spread all over GBN leading to a buildup of bugs within herself, culminating in her asking Hiroto to erase her to prevent them from getting out when she couldn't contain them anymore.
• Benevolent A.I.: Hiroto confirms in Season 1 that Eve was not only his friend, but an El-Diver birthed from the digital world of GBN.
• Big Sister Instinct: Towards Sarah whom Eve considers being her little sister. Though it came at the cost of her own life, Eve more than willingly took on the burden of absorbing the bugs that Sarah been causing unknowingly so that she could protect both her sister and GBN.
• Came Back Strong: The final episode reveals that part of her data was used in creating May, thus Eve is kinda-sorta resurrected as May.
• Heroic Suicide: Ultimately she asks Hiroto to erase her in order to destroy the bugs that she has absorbed within herself.
• Identical Stranger: She looks almost exactly like an Ancient that Alus once knew, only with blonde hair.
• Interspecies Romance: As seen in Episode 19, Eve's (EL-Diver) relationship with Hiroto (Human) eventually develops into a romantic one. Sadly, it ends tragically for the two as Hiroto is forced to delete her.
• Lost Lenore: Towards Hiroto. Her death is one of his greatest regrets and haunts him for the next two years until his meeting with the rest of BUILD DiVERS. However, even May has no idea if an EL-Diver like her can truly die, and for most of the series Hiroto held on to hope that she might still be alive. And in a way, she was.
• Meaningful Name: "Eve", as in "the first woman created by God" or as in the day or period of time immediately before an event or occasion. Both of which fit since she's the first EL-Diver and met Hiroto not long after GBN went online.
• Mysterious Waif: Almost nothing is revealed about her early in the series other than that Hiroto is looking for her.
• No Name Given: For a large portion of the series, though we see glimpses of Eve through Hiroto's flashbacks, her name is never actually mentioned. She was formally introduced in Episode 19, but prior to that the only reason her name is known is due to her character profile.
• Small Role, Big Impact: The second season reveals that Eve inspired Hiroto to create the armor systems of the Core Gundam, as well as name them after the planets of the Solar System.
• Suspiciously Similar Substitute: Has a similar appearance, uses similar lines, and has a similar attachment to flowers as Sarah, the Mysterious Waif from season 1 of Build Divers.
• Too Good for This Sinful Earth: Eve is so pure she willingly absorbed all the bugs Sarah had been unwittingly generating, necessitating her deletion.

"Captain Zeon"

Voiced by: Show Hayami (Japanese), Mick Lauer (English)

Gunpla: RX-93N04 ν-Zeon Gundam, ZGMF-X20AK Gundam Freedom Knight, GF13-017NJII God Gundam (GBD Battleogue Only)

A popular G-TUBE streamer who loves GBN and who dresses as a superhero.

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• Canon Character All Along: Despite seeming like an all-new character, episode 24 and 26 heavily imply he is none other than Rommel from the original Gundam Build Divers series, with Rommel being extremely happy with Kazami's praise of Captain Zeon, and Rommel suddenly disappearing in the Final Battle "to get ready", only for Captain Zeon to show up in the next scene.
• The Cape: Despite his avatar being that of a Zeonic propaganda piece and using Disproportionate Retribution at times, he's very much a heroic figure and inspires both viewers and his enemies.
• Captain Patriotic: He's a superhero taking his namesake and stylings from the Principality of Zeon, the space colony nation-state from the classic Mobile Suit Gundam continuity.
• Colony Drop: His Finishing Move allows him to drop the asteroid Axis on his opponent's head, blowing up them and everything else in sight.
• Composite Character: His Ν-Zeon Gundam is a mashup of the opposing Nu Gundam and Sazabi from Mobile Suit Gundam: Char's Counterattack, with a customized Tactical Arms from Mobile Suit Gundam SEED Astray for good measure.
• Destructive Saviour: His first appearance has him perform a Colony Drop as his Finishing Move to stop a group of thugs and destroy the surrounding region.
• Disproportionate Retribution: He drops Axis onto a group of thugs for crimes like holding up launch pads or selling freebies for high prices and takes much of the surrounding area with them. Given that they're playing a video game, the thugs respawn and even pull a Heel–Face Turn.
• Dynamic Entry: Makes his re-entrance in the Final Battle by firing a giant Wave-Motion Gun blast into Alus's fleet.
• Foreshadowing: Him being voiced by Sho Hayami in Japanese, and using Zeon iconography on a non-Zeon suit, hints at the eventual implication in episode 24 and 26 that he's Rommel, who is also voiced by Sho Hayami and uses a Grimoire with Zaku-esque colors and detailing.
• Hypocritical Humor: In episode 4, Captain Zeon tells three bad-mannered users to take to heart the Antarctic Treaty, Mobile Suit Gundam's fictional The Laws and Customs of War that forbid things like using nukes, harming civilians, or performing a Colony Drop... while he performs a Colony Drop on them.
• Invincible Hero: His averting of this is used as a plot point. Gojo tells Kazami that part of what makes Captain Zeon cool is that he loses, which Kazami strongly disagrees with to the point where he tries to skip episodes where his enemies win. What Kazami misses at first because of this is that even in times where Captain Zeon stands no chance, what truly makes him inspirational is that he never gives up.
• Legacy Character: Believe it or not, this is not Captain Zeon's debut. Originally, he was a fictional character in the Universal Century timeline made for Zeon propaganda. Someone decided to portray themselves as him for their G-Tuber career. Then again, portraying oneself as Captain Zeon is slightly less weird than having a uniformed white ferret for an avatar....
• Magnetic Hero: His first appearance has him put down three thugs for misbehavior. Later when he was losing to a Destroy Gundam, the trio returns to aid him, having pulled a Heel–Face Turn.
• Nonstandard Character Design: He's drawn with much bolder, darker shading than anyone else, making him look as if he's stepped out of the pages of a classic comic book.
• Red Is Heroic: He wears a red costume, pilots a red Gundam, and is a superhero who fights evil.
• Sailor Earth: Impressed by Kazami's Justice Knight, he creates an "unauthorized partner" unit to go with it called the Gundam Freedom Knight.
• Secret Identity: To go with his whole Superhero theming, he keeps his actual username and standard avatar look a secret. Episode 24 and 26 hints that he's Rommel, leader of the famous 7th Panzer Division GBN Force.
• So Proud of You: In Battlelogue, he denies Kazami's request to take him on as an apprentice, because he believes Kazami has already grown into a capable hero in his own right and is proud of that.
• There Is No Kill Like Overkill: Decides to finish off a trio of thugs by dropping Axis on them, destroying both them and pretty much all of the surrounding lands all at once.
• Two Aliases, One Character: Episode 24 and 26 imply he's none other than Rommel of the 7th Panzer Division, who is extremely happy to hear Kazami praise Captain Zeon, and suddenly disappears in the Final Battle "to get ready", only for Captain Zeon to show up in the next scene.

Mu Dish

Gunpla: GAT-01A1+AQM/E-X04 Gunbarrel Dagger, TMF/TR-2 BuCUE Tactical Reconnaissance Type, AMRF-101C AWACS DINN

Kazami's old Force before he left.

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• Shout-Out: The three main members we see are based on characters from Journey to the West. Gojo is Sha Wujing seeing his monk spade earring, Sagari is the monk Sanzang, and Yuri is Sun Wukong. Interestingly, for a group based on these characters, it's the Sha Wujing and Zhu Bajie equivalents who are more prominent for a change; Gojo is the leader of the Force rather than Sagari or Yuri, and Kazami is a main character.
• So Proud of You: When they arrive as part of The Cavalry, Gojo expresses his pride for the matured Kazami, although Sagari and Yuri rib on him to cease with the praising lest Kazami let it get to his head again (which of course, at that point, he no longer does)

Other Characters

Hinata Mukai

Voiced by: Shion Wakayama (Japanese), Lisa Reimold (English)

^{Click here to see her Diver avatar}

Hiroto's childhood friend. Hinata has a cheerful personality, and she belongs to the archery club at school. She also has just started a part-time job at the G-CAFE.

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• Audience Surrogate: Deconstructed. Unlike other Build characters, Hinata is less the person who gets info dumps on and more the person who gets the info dumps and just smiles and nods. This ultimately puts her in a Locked Out of the Loop situation over Hiroto's attitude, and thus she finds herself unable to help him emotionally. After Hiroto learns that she herself found out about Masaki's condition on her own, he wastes no time bringing her up to speed what's been going on. She's naturally horrified and fearful for Hiroto's safety at first but immediately goes back to being supportive of his newfound purpose, while she resolves to emotionally support Masaki's sister. She gets to see Eldora itself and meet the Eldorans in the epilogue when she joins Hiroto on a visit.
• Childhood Friend Romance: Has a crush on Hiroto, who is completely unaware that she has a crush on him, or even that she's attractive. That said, though, especially after resolving his own issues, Hiroto returns to being appreciative of her presence and support, especially after he tells her of what's going on.
• Miko: Serves as one as part of a kyudo ceremony she's been preparing for. In the final episode, she uses a longer-haired, miko-themed avatar when she joins BUILD DiVERS and visits Eldora.
• Nice Girl: Hinata's main characteristic and the major hurdle between her and Hiroto. She just gently prods Hiroto into doing good things and being better, but she realizes there's someone else that she just can't compete with.
• Sixth Ranger: When the team introduces her to their Eldoran friends, she's described as one of the team, emotionally supporting them from outside GBN.
• Stealth Mentor: Tries to quietly push Hiroto in various ways to be a better person and enjoy himself more, such as starting up GBN in earnest again or talk with his new friends when a problem crops up.
• Tears of Joy: At the end of Episode 22, after Masaki finally wakes up from his coma, knowing that Hiroto has become the hero she believes him to be.

Ken Matsumura

Voiced by: Yoji Ueda (Japanese), Bill Rogers (English)

Gunpla: Gunperry

The manager of The Gundam Base, he gives lectures on how to make Gunpla. He is also a fan of Henken Bekkener who appears in Mobile Suit Zeta Gundam.

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• Big Damn Heroes: Shows up in a Gunperry during the final battle carrying all of Hiroto's planet armors, allowing him to use them after Alus steals the Earthree. This sadly doesn't stop him from receiving a shot from Alus meant for Hiroto.
• Nice Guy: The only defining thing about his character despite being an extra. He is also all too happy to give Hinata a part time job in The Gundam Base and allows her breaks whenever she hangs out with Hiroto.
• Shipper on Deck: He ships Hiroto and Hinata and is fully supportive of them, though they're unaware of this.
• Taking the Bullet: Or taking a laser shot in this case. He barges into the duel between Alus and Hiroto in a Gunperry and does this, saving Hiroto. This damages some of Hiroto's armor pieces he was carrying as he implies, but Hiroto manages to improvise a new configuration from whatever was left.

Osamu and Yuriko Kuga

Osamu voiced by: Go Inoue (Japanese), Tony Oliver (English)

Yuriko voiced by: Fumiko Orikasa (Japanese), Julie Ann Taylor (English)

The mother and father of Hiroto. Osamu is a freelance writer and has a very unique style. Yuriko, the contrasting wife, runs a freelance translation business and has a style the exact opposite of her husband. Osamu has a great understanding of the Hiroto's Gunpla Battle hobby.

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• Disappeared Dad: Played for Laughs. Hiroto's father is constantly locked up in his study dealing with another case of Writer's Block, meaning Hiroto never actually interacts with him for episodes on end.
• Lethal Chef: In Episode 9, we finally get to see Osamu out of his room, burning the meal he cooks.
• Shout-Out: A writer named Osamu who lives in Yokohama, Japan? Why does that sound familiar?
• Supreme Chef: Yuriko is more experienced in cooking and is seen cooking for her family across the show.
• So Proud of You: Not outright said to him, but their final lines indicate they've since become aware of what their son had been up to, and their tone indicates pride in his heroism.

Mizuki Shido

Voiced by: Chinatsu Akasaki (Japanese), Maureen Price (English)

Masaki's older sister, who has been taking care of him while he was bedridden after he failed to return to consciousness after playing GBN.

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• Big Sister Instinct: Once Masaki wakes up, and finding him out of bed and already biking around too soon, she pleads with the BUILD DiVERS to spare him from further involvement, even if Masaki himself is clearly the one wanting to be involved with the Eldora crisis. She lays it out best: As far as she knew, he was just playing GBN with friends, never realizing it would render him comatose for months. It takes seeing him mentor some hospital kids on building Gunpla, and watching Kazami's videos for her to properly understand his drive to return to the frontlines and moves her to give him her blessing to return to Eldora.
• The Caretaker: For Shido while he is in a coma.
• One Degree of Separation: She knows Hinata as she was her senior in the archery club.

Returning Characters

Magee

Voiced by: Taishi Murata (Japanese), Doug Erholtz (English)

Gunpla: ZGMF-X20A-LP Gundam Love Phantom, ASW-G-01 Gundam Bael (GBD Battleogue Only)

^{Click here to see his real life appearance}

A top-ranking Gunpla Battle Nexus player who helped the original Build Divers two years earlier. For tropes related to Magee in the first series, click here.

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• Affectionate Nickname: May calls him "Mama".
• The Bartender: May visits the one he runs in GBN to report about her investigations into Freddie's dimension.
• Colbert Bump: Does this In-Universe for Kazami's videos, to rally as much of GBN to the aid of BUILD DiVERS' aid in training for the final battle. Especially amazing considering Kazami had not uploaded episodes since the space battle.
• Distracted by the Sexy: His report to May in episode 6 appears to have been derailed by a long tangent about a "hot guy".
• Deus Exit Machina: Despite being a skilled high-level diver himself, Magee sits out the Coalition's exercise, along with Sarah.
• Gondor Calls for Aid: Following the rescue of Masaki Shido, Magee shares Kazami's newest video as a means to rally any divers he can to help defend Eldora. He is immediately answered by Patrick Colasour and Onoko^note From the Build Divers Break manga.
• Locked Out of the Loop: Inverted. Due to May's constant updates, of the wider GBN community, he's likely and so far the only high-profile Diver who's aware that Eldora is Real After All, and the entire crisis with Masaki Shido. Given the fact that many of the previous major characters (at least Kyoya, Karuna, Emilia, Riku, Sarah, Tsukasa, Shahryar, and the admins) are shown to be fully aware that Alus' invasion was a real threat, it's very likely he was the one who brought them into the loop.
• Navel-Deep Neckline: His avatar still wears a jumpsuit a completely unzipped top half, showing off his muscular chest.
• Promotion to Parent: All the named Divers from the first season ended up as surrogate parents to the newly discovered EL-Divers, guiding them through the real world and life in general. In particular, Magee became May's guardian.
• Squashed Flat: His fate upon fighting the Mobile Doll May-controlled II Neo Zeong.

"Patrick Colasour"

A regular user of GBN who also stepped up to help the original Build Divers two years earlier, in both the original Break Decals war and the Coalition of Volunteers (having significantly better luck in the second).

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• Demoted to Extra: Suffers significantly reduced screentime this season, due to having no access to Eldora.
• Jumped at the Call: He is literally the first to answer Magee's Gondor Calls for Aid.
• Memetic Bystander: He's the same as he ever was.
• Mistaken for Badass: Thanks to Freddie activating the ancient runes during the Coalition War, one of the first GBN Divers he's ever seen is Patrick himself.
• Wholesome Crossdresser: For some reason, he's wearing Haman Karn's Iconic Outfit from Mobile Suit Zeta Gundam in Episode 11.

Ruck Arge / Shahryar

Voiced by: Ryōta Ōsaka (Japanese), Todd Haberkorn (English)

Gunpla: GN-1001N Seravee Gundam Scheherazade

^{Click here to see his GBN avatar}

Patrick/Parviz's older brother, a master builder, and force leader residing in the neutral Perisian server. For tropes related to Shahryar in the first series, click here.

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• Big Brother Instinct: He was the one who introduced Patrick to GBN, so the latter (as Parviz) can revive his love for the skies again after his accident. Incidentally, when they do appear together in episode 24, Shahryar subtly signals Parviz to keep their familial relationship a secret, clearly to protect the latter, which Par plays along with
• Brains and Brawn: The Brains to Tigerwolf's Brawn. Prefers looking at Gunpla in a more artistic manner and focuses on performance as opposed to firepower and strength.
• The Cameo: Shahryar doesn't actually appear in a significant manner this time around, except in a flashback, and he doesn't even appear at all in his avatar until Episode 24.
• Vitriolic Best Buds: Two years later, and he's still this with Tigerwolf. Some things never change.

Nanami Nanase

Voiced by: Kanae Itō (Japanese), Reba Buhr (English)

Gunpla: MA-04X Zakrello Suit

A friend of the original Build Divers team, she now acts as an assistant and overseer for May. For tropes related to Nanami in the first series, click here.

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• Adaptational Attractiveness: Her Gunpla's inspiration. Despite the Zakrello being infamously goofy and hideous, the interpretation of its design for her Powered Armor is much more refined and actually badass looking.
• The Cameo: She has no direct active role this time around, mostly appearing in the background to look after May and carry her around. Until the final battle, that is.
• Cool Shades: Now wears a pair of shades which gives her an almost The Men in Black kind of look.
• 11th-Hour Ranger: Her position in the new Build Divers is cemented when she pulls a Big Damn Heroes with the Zakrello mech she'd been developing since the previous show.
• Perpetual Frowner: Somewhat, but she is never shown any other expression than a serious frown when on the job. When she is more off-duty at Magee's bar she is shown to loosen up more. Completely averted when she finally joins in the final battle, with the same cheery and chatty personality she's always had
• Powered Armor: Her Zakrello Suit is this as opposed to a proper Gunpla.
• Sharp Dressed Woman: Now wears an impressive looking suit whenever she is on screen.
• Took a Level in Badass: She was not necessarily impressive in her primary outing in GBN last time, but it's clear that she's gotten far more skilled in combat in the two years since, and in a Powered Armor-type Gunpla rather than a piloted machine at that.

Build Divers

Riku is voiced by: Yūsuke Kobayashi (Japanese), Erik Kimerer (English)

Sarah is voiced by: Haruka Terui (Japanese), Kayli Mills (English)

Yukki is voiced by: Natsumi Fujiwara (Japanese), Erica Mendez (English)

Momo is voiced by: Nene Hieda (Japanese), Kira Buckland (English)

KO-1 is voiced by: Atsushi Tamaru (Japanese), Kyle McCarley (English)

Ayame is voiced by: Manami Numakura (Japanese), Cherami Leigh (English)

Gunpla: GN-0000DVR/S/M Gundam 00 Sky Moebius, RGM-89BM Jegan Blast Master, PEN-01M Momokapool, SD RX-零/覚醒 RX-ZeroMaru , RMS-117G11 Galbaldy Rebake, HER-SELF Mobile Doll Sarah, GNT-0000 00 Qan［T］, Load Astray Double Rebake (Cuadro Mode)

The heroes of the original series, famed for defying the entirety of GBN to save one of the first EL-Divers. Two years later, they are still together. For tropes pertaining to the six in the first series, click here.

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• Bag of Spilling: An odd case as Ayame still uses her old RX-Zeromaru instead of the upgraded Zeromaru Shinki Kessho from the end of Divers.
• Composite Character: While the Load Astray Double Rebake is indeed built from its namesake and has a mode built for unrestrained melee combat just like a Post-Disaster suit, it is more accurately a Gunpla based on Gundam Scuri/De:OZ, with the underlying gimmicks simplified to require only one coherent unit (the Double Rebake itself) for ease of use.
• Costume Evolution: While KO-1 and Ayame still wear their original outfits, Riku, Sarah, Yuuki, and Momo have changed up since the original series. Momo is the most notable as she's abandoned her Cat Girl design for a panda design. This also seems to be reflected in her Momokapool, which is now black and white. Sarah is the next most noticeably changed as she's restyled her hair into a ponytail and has a jacket that hangs off her arms, giving her an even more lady-like appearance. Amusingly, her change in looks isn't reflected on her HER-SELF Gunpla body, still keeping her old design.
• Deus Exit Machina: Sarah sits out the exercise, despite having her own Gunpla. Then subverted in the final episode, where she takes part in the final battle.
• 11th-Hour Ranger: Tsukasa Shiba appears in the final battle, copiloting a new variant Astray he co-developed with Koichi.
• Expy: The Cuadro mode of the Load Astray Double Rebake, the half that Koichi pilots, is one to the Gundam De:OZ from Operation Galiarest, a then-recent sequel to the Mobile Suit Gundam Wing manga G-Unit. The chief difference is that the Double Rebake's modes are swapped between by shifting its parts around, while De:OZ is one of two Combining Mecha options for the component Gundams Castor and Pollux (the other being a unit similar to the Double Rebake's Reverso mode named Scuri.)
• Famed In-Story: While they are still very low in the ranks, their defiance and victory over GBN, its greatest players, and its administration have made them popular with many players. In Gundam Build Divers Rize, one player pilots the Destiny Sky, a Destiny Gundam with 00 Gundam's equipment, in homage to Riku's 00 Sky.
• Grievous Harm with a Body: One of Momoka and Koichi's new Combination Attacks involves Koichi using his hammer pliers to slam Momoka's entire gunpla like a ball at their opponents. She follows it up with a Beam Spam that rains fire on the entire field.
• Locked Out of the Loop: Averted in the case of Riku and Sarah. Even before the final battle, there's a strong implication that they, especially Sarah, are aware of what their successors are training for. Sarah pretty much makes it clear she knows when she and May talk Alus down long enough for the finishing blast, and Riku's lack of surprise indicates he knows as well.
• Squee: In Battlogue, Ayame flips out upon seeing an SD Heero Yuy, reacting the same way she did upon seeing a Pettitegguy. Too bad it's a trap by Parviz.
• Team Pet: In the form of Sarah's pet carbuncle, Mol. By the time they make a full appearance, they now have four of them.
• Transforming Mecha: Pilots the Load Astray Double Rebake alongside Tsukasa that is able to switch between two modes - Cuadro and Reverso. Koichi pilots the "Cuadro Mode", meant for more long-ranged shooting attacks.

Rommel

Voiced by: Show Hayami (Japanese), Patrick Seitz (English)

Gunpla: GH-001RB Grimoire Red Beret

Leader of the 7th Panzer Division. For tropes related to Rommel in the original series, click here.

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• Secret Identity: Not exactly secret because his squad seems all too aware of this, but it's implied that Captain Zeon is none other than Rommel himself. He doesn't even try to hide the fact that he's basking in Kazami's praise when they finally talk.
• Significant Double Casting: Not only is he heavily implied to be Captain Zeon through his interactions with Kazami, but he is also voiced by Show Hayami. Averted by the dub.

Kotaro Ogami / Tigerwolf

Voiced by: Jun'ichi Suwabe (Japanese), Kaiji Tang (English)

Gunpla: XXXG-01S2龍虎狼 Gundam Jiyan Altron

^{Click here to see his actual appearance}

Leader of the Toraburyu force and self-styled martial arts master. For tropes related to Tigerwolf in the original series, click here.

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• Brains and Brawn: The Brawn to Shahryar's Brains. Prefers to think with his fists, as opposed to his mind. That said, along with the similarly brawn-oriented Ogre, even he agrees that the One-Eyes rely too much on Attack! Attack! Attack!
• Vitriolic Best Buds: Two years later, and he's still this with Shahryar.

Force Avalon

Kyoya is voiced by: Jun Kasama (Japanese), Mark Whitten (English)

Karuna is voiced by: Yoshiki Nakajima (Japanese), Sean Chiplock (English)

Emilia is voiced by: Nanako Mori (Japanese), Erika Harlacher (English)

Gunpla: AGE-TRYMAG Gundam TRY AGE Magnum, ZGMF-X20A Strike Freedom Gundam ''(GBD Battleogue Only)'', AGMF-X56S/l Impulse Gundam Lancier, AGMF-X56S/a Impulse Gundam Arc

A force led by Kyoya Kujo, the No.1 player in GBN, with Emilia and Karuna as Vice-Captains. Hiroto was once part of this force until the events of the second Coalition battle. For tropes related to Kyoya and the other members in the original series, click here.

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• Big Brother Mentor: Karuna was this to Hiroto during the latter's membership, thus the below trope.
• Badass Cape: Kyoya's new TRY AGE Gundam is introduced with this and a Badass Armfold. It also can double as a Laser Blade and a medium to manifest his attacks with his new Try-Age System.
• Calling Out for Not Calling: Karuna gives Hiroto an earful at the beginning of Episode 24 because not only did the latter not mention that he got back into GBN again, but also that he didn't even bother to visit his former teammates.
• Combat Pragmatist: Combined with Not the Intended Use. While piloting a Strike Freedom against Hiroto's Barbatos Lupus Rex, he grabs one of his DRAGOONs to attempt to stab the latter's shoulder joints. You would expect that move from the Legend, not the Strike Freedom.^note Note that this was an intended weapon of the Strike Freedom, but Kira never used this function.
• Fight Like a Card Player: Kyoya's new build is based on the Try Age Gundam (itself a tweaked AGE-1), and can actually use super moves through the Gundam Try Age card game. It isn't the most practical of systems but the results are outrageous.
• Giant Hands of Doom: Downplayed, but one of Kyoya's new card abilities quite literally summons a giant AGE-1 Titus fist from the heavens.
• Locked Out of the Loop: Averted with Kyoya. He's implied to know that the BUILD DiVERS are not training for a mere in-game event, but a real war on a distant world. Definitely confirmed by the epilogue as he's discussing the matter of Alus and Eldora's connection to the EL-Divers with Ms. Tori and Katsuragi at a cafe offline.
• One-Man Army: Kyoya is able to pin down all four members of the BUILD DiVERS with little to no effort, thanks to his funnels. Kazami calls him a monster, while May mentions this trope by name (in Gratuitous English) during that moment.
  • During the Battlelogue episode, Hiroto believes that he has little to no chance despite acquring a Gundam that can No-Sell almost his entire arsenal, believing it wouldn't be enough to handle him due to his outrageous level of skill.
• So Proud of You: In Battlelogue, while he does float to Hiroto of the latter possibly returning to Avalon, he already knows, and which the latter confirms, that the younger diver happy being a BUILD DiVER, and Kyoya is proud of that.

Hyakki

Ogre is voiced by: Wataru Hatano (Japanese), Greg Chun (English)

Do-ji is voiced by: Yoshitsugu Matsuoka (Japanese), Derek Stephen Prince (English)

Rose is voiced by: Mariko Higashiuchi (Japanese), Tamara Ryan (English)

Gunpla: ARX-78GP02R天 Gundam GP-Rase-Two-Ten, GNX-803DG Do-ji GN-X, MSN-03SL Jagd Doga Thorn, ZM-S22S 凶 Rig Shokew Magatsu, WMS-03NT Maganac Cinnabar

A force of oni-themed divers that were initially antagonistic rivals to the original Build Divers, but have since become friendly rivals through their different battles against and alongside each other. For tropes related to them in the original series, click here

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• Busman's Vocabulary: Ogre talks about combat and one's fighting ability as though he were describing food. For example, if he says someone is "Tough in the shell, but not very savory", it means they have a good defense, but their offense sucks.
• Composite Character: Do-ji's new Do-ji GN-X is one between his brother's original Ogre GN-X and the colors and the weaponry of his previous Gunpla, the Ghara Ghurarga.
• Dumb Muscle: Averted in the case of Ogre, despite his very prominent Blood Knight personality and brutish tactics. He easily points out that the Dubious Arche Gundam, and most of the One-Eyes for that matter, rely too much on Attack! Attack! Attack! strategies that can be easily exploited.
• Friendly Rival: Especially in the case of Ogre and Do-ji. The latter has pretty much none of his less-than-pleasant character traits from the original series left, and Ogre has clearly become this to Riku. This also extends to his interactions with Kazami and Par.
• Meat Shield: Do-ji gets used as such by Kazami when Momoka rains Beam Spam on the entire battlefield...even if we've seen the Aegis Knight more dangerous fire than that. Amusingly, Do-ji's ire is directed at Momoka instead of Kazami.

Katsuragi/Game Master and Ms. Tori

Katsuragi is voiced by: Eiji Takemoto (Japanese), Armen Taylor (English)

Ms. Tori is voiced by: Mai Nakahara (Japanese), Ryan Bartley (English)

Gunpla: GunPanzer

The primary administrator and main developer of GBN, respectively. The two have since patched up their differences in the two years since the events of the last series and now work together maintaining the system. For tropes related to them in the original series, click here.

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• Healing Shiv / World-Healing Wave: After Alus attempts to destroy the servers, the two manage to quickly patch the damage, implemented in the form of shots from Katsuragi's Gunpla.
• Locked Out of the Loop: Averted, given that they are in charge of the system to begin with, they would be the least fooled by the idea that Alus' invasion was an event, especially given the very real effect he was having on GBN itself. In the epilogue, they and Kyoya clearly now know the full story about Alus, Eldora, and their connection with the EL-Divers.
• Non-Idle Rich: When we finally see them in the real world discussing the extraterrestrial origins of the data for the EL-Divers' sapience with Kyoya, contrasting Katsuragi's more business appearance, Ms. Tori clearly has the appearance of a very classy woman, with her large hat and her fashionable clothes. She's still nonetheless active in helping maintain the system and even joining Katsuragi on the frontlines.
• Parrot Pet Position: All appearances of Ms. Tori (save for a flashback) have her perched on Katsuragi's left shoulder.
• Transforming Mecha: This time, rather than fighting with just his avatar like he did last time, Katsuragi fields one of these (another SD Gundam Force model, at that) as his Gunpla, though it's mostly used to repair the damage Alus has done to the server.

Tsukasa Shiba/Ansh

Voiced by: Taku Yashiro (Japanese), Khoi Dao (English)

Gunpla: Load Astray Double Rebake (Reverso Mode)

^{Click here to see his Diver avatar}

The former mastermind of the Break Decals incident, he's since reformed and works along with Koichi Nanase once more, this time to help create Mobile Dolls for EL-Divers to inhabit while in the real world. For tropes related to Tsukasa in the original series, click here

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• The Atoner: His participation in helping to create Mobile Dolls for EL-Divers, as well as him making his Diver name "Ansh", are his ways to atone for his actions during the Break Decal incident.
• 11th-Hour Ranger: Shows up as this with Koichi, co-piloting the Load Astray Double Rebake.
• Expy: His half of the Double Rebake, the Reverso Mode, is based on Gundam Scuri in the same manner that Koichi's Cuadro mode is based on De:OZ.
• Heel–Face Turn: Fully cemented it after the original series, as May's flashback shows Tsukasa working with Koichi to build EL-Divers like her Mobile Doll bodies for them to interact with the real world. He even has an official Diver name now, Ansh.
• Pre Ass Kicking One Liner: Screams "I HAVE CONTROLLL!!!" before going apeshit against a group of One-Eyes.
• Same Clothes, Different Year: Even after two years following the events of the original series, Tsukasa still utilizes his purple Guest Haro avatar. This is especially funny knowing that he's officially become a registered Diver after the events of the original Build Divers anime.
• Transforming Mecha: Pilots the Load Astray Double Rebake alongside Koichi that is able to switch between two modes - Cuadro and Reverso. Tsukasa pilots the "Reverso Mode", meant for melee combat.

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