Characters from Doraemon: Nobita and the Birth of Japan.
Prehistoric Times
Kukuru
- Adaptational Badass: The original manga and anime leaves him in the sidelines during the climax, but he does partake in the final battle in the remake. He even proves crucial to sabotage Gigazombie's Time Distortion Nuke by climbing on the WMD and breaking the antenna on it's top, preventing the weapon from going off and saving the universe in the process!
- Babies Ever After: The "Where Are They Now?" Epilogue in the remake shows that he later starts a family of his own.
- Cute Bruiser: A child around Nobita's age, but can kick plenty of ass using a stone spear. The remake gives him even more badass moments by allowing him to beat up Kurayami tribespeople and assist the heroes in fighting Gigazombie.
- Identical Stranger: He looks a lot like Nobita in the original version, to the point where Gian and Suneo lampshades if Kukuru is distantly related to Nobita. The remake averts it by making Kukuru a more distinctive character with a different appearance compared to previous versions.
- Low-Tech Spears: His preferred weapon is his stone spear, which is a real weapon and not an artificial gadget (like the spears Doraemon gave the gang). Gian assumes it's fake until a confused Kukuru hits him with it.
- Wake Up Fighting: When Kukuru regains consciousness for the first time in front of Gian, Suneo and Shizuka, the first thing he did is to attack them while in his confused state. He's later knocked out by Gian, who comments he puts up one heck of a fight.
- Waking Up Elsewhere: Two instances; after getting sucked into a time portal and passing out, he wakes up in Nobita's bedroom (to the surprise of Gian, Suneo and Shizuka who's looking for Nobita and Doraemon) and getting into a fight with Gian, who unintentionally knocks him out cold. He then wakes up again... this time back to 70000 years ago, before of Nobita and the gang, in their impromptu cave home.
Pega, Draco, Gri
Draco, Gri and Pega can fit in Nobita's clothes as infants.
As adults.
A trio of artificially-created animals consisting of Pega the Pegasus, Gri the Griffin and Draco the oriental dragon made by Nobita using Doraemon's Original Life Set. Again, Nobita creates them in an attempt to impress his friends for making fun of him earlier, but he develops a special bond with them later on (even moreso in the remake).- Adaptational Angst Upgrade: The trio, being fictional animals based on myth, couldn't really fit in society, so the story ends with the Time Patrol sending them to an animal sanctuary in the 22nd Century. In the original manga and anime Nobita bids them farewell knowing they're in safe hands, but the 2016 remake have Nobita tearing up and sobbing at his pets leaving him. The feeling is quite mutual, with Pega, Draco and Gri equally upset they're not going to be with their master, with the remake's goodbye at the ending being a lot, a lot more emotional than any previous versions.
- All Animals Are Dogs: Even a pegasus, a gryphon and a dragon. Gri the gryphon even loves playing fetch like an actual dog would! Justified since they're artificially created animals.
- Big Damn Heroes: In all versions, the trio—with Nobita riding on Pega—barges into Gigazombie's cave hideout and rescues Doraemon and the others in the nick of time before they can be Fed to the Beast.
- Cool Horse: Pega by default, since he's, well, a pegasus.
- Creating Life: They're artificially-created animals made by Nobita after he decide to tamper with Doraemon's Original Life Set by combining strains of different animal DNA.
- A Dog Named "Dog": A pegasus named Pega, a griffin named Gri, and a dragon named Draco.
- Gigantic Adults, Tiny Babies: Being artificial constructs, they start off small enough to be hatched from eggs Nobita can carry in one hand and grow into massive steeds to ride on.
- Go Fetch: Gri the Griffin really enjoys playing fetch with a stick. When Nobita have to bid them goodbye in the remake, he tells the Time Patrol officer leading the animals away that Gri loves playing fetch, so play with him whenever they have the time.
- Head Pet: In their infant forms, they can sit comfortably on Nobita's cranium. A few early scenes with the trio have one of them riding on it's master's head as Nobita carries the other two on each hand.
- Horse of a Different Color: Gri and Draco can serve as steeds for Nobita and friends.
- Mix-and-Match Critters: They are born when Nobita is tasked by the gang as "Minister of Pets" to create animals using Doraemon's Original Life Set. Nobita decide to get creative and combine the DNA of various animals, so he creates Pega by mixing equine and avian DNA, adds strains of eagle and lion in one capsule creating Gri, and puts crocodile, bat, and lizard essence in another creating Draco.
- Whale Egg: Pega the Pegasus is hatched from an egg, much like his griffin and dragon comrades. Justified since it's Doraemon's gadgets.
Villains
Gigazombie
"You stupid robot cat. Don't you know I'm from the 23rd Century?"
A time-traveling supervillain who travels back to prehistoric times, enslaving an entire tribe and making himself their deity in the process with intentions of changing the world's history.
- Adaptational Badass: The remake turns Gigazombie from a generic time-traveling criminal who brainwashed a tribe into making him their leader into an all-powerful supervillain who wants to rewrite history for himself, with giant robots under his disposal (absent in the original) and a Time Distortion nuke as a trump card. He also goes down fighting to the last moment, compared to the original Gigazombie who tries to pull a Screw This, I'm Outta Here only to accidentally bump into a Time Patrol transport and fall down some steps before he's effortlessly arrested.
- Big Bad: He's the main villain of the story, who time-travels to the past, enslaves an entire ancient tribe and intends to rule as their leader with an iron fist. The remake even have him trying to rewrite history to his liking.
- Broken Faceplate: The remake reveals his face when his mask gets split into half. Not so much in the manga and original, where it simply falls off as he tries fleeing from the Time Patrol.
- Curb-Stomp Battle: He effortlessly defeats Doraemon in their first one-on-one duel, because he's from the 23rd Century - a hundred years ahead of Doraemon.
- Deity of Human Origin: A 23rd Century human scientist who travels back to prehistoric times and took control of the Kurayami tribe, making himself their "God" and forcing them to wage wars on the peaceful native Hikari Tribe.
- Elaborate Underground Base: Gigazombie's lair is located underground to avoid detection from the Time Patrol, accessible from entering a cave on the surface.
- Evil Gloating: He indulged in these in all versions, notably after defeating Doraemon and in the remake, when he declares his Time Distortion Nuke will change the world.
- The Faceless: For most of the story, until his mask falls off (original manga and anime) or breaks off (remake).
- Fed to the Beast: Gigazombie's lair have an arena where captured prisoners and disobediant slaves are fed to saber-toothed tigers while Gigazombie watches with glee. Doraemon and the gang nearly suffers this fate until Nobita arrives with his pets to save everyone. The remake have the arena being littered with bones and skulls to highlight Gigazombie's "Look I'm so evil" nature.
- Hidden Villain: Him being the true evil manipulating an ancient war and enslaving the peaceful Hikari tribe isn't made clear until more than two-thirds into the story, with his robot minion Tsuchidama acting on his behalf at first.
- Magic Staff: Variant, his staff is made of 23rd-Century technology allowing him to electrocute his targets and command his robots.
- Make Wrong What Once Went Right: He traveled back to ancient times to reshape history as he sees fit.
- The Man Behind the Man: After Doraemon defeats Tsuchidama, the gang leaves with the liberated Hikari tribe prisoners, only for a later scene to reveal Tsuchidama to be just a pawn serving Gigazombie, the true actual villain.
- Parrying Bullets: When a desperate Doraemon, in a last-ditch attempt to take down Gigazombie, throws his spear at the villain, Gigazombie simply raises a hand and splits the spear into half (this was only in the remake by the way, which as mentioned earlier makes him a far greater badass than his previous incarnations). It was then he gloats to a shocked Doraemon that he's a hundred years ahead in terms of technology.
- Robot Master: Creates his own legion of robots made of "memory" ceramic. The remake also gives him two giant elephant-bots as his personal guards.
- Shock and Awe: His staff can generate electrical bolts far stronger than Doraemons'.
- They Look Just Like Everyone Else!: Underneath that mask, he looks like an ordinary man. The remake gives him "one" eye (he seemingly suffered an Eye Scream at some point in the past, with his left eye an empty hole) but besides that, he doesn't appear too different from a normal person.
- Villain Respect: Gigazombie allows Doraemon to penetrate the depths of his hideout as a show of respect. In the remake, he is also impressed that the heroes managed to reach his lair in the first place.
- Weaksauce Weakness: (remake) As it turns out, he can effortlessly crack and deflect Doraemon's flung spear because that is a gadget. But the gang throws Kukuru's real spear, which he couldn't deflect with his barrier, thereby shattering his mask.
- Working on the Chain Gang: His underground lair has mines where enslaved Hikari tribespeople are forced to dig and expand, under the watchful eye of Kurayami guards.
Tsuchidama
- Demoted to Extra: In the original manga and anime Tsuchidama returns as a regular mook (he can be differentiated from the other robots due to missing a piece from his left arm - the same piece Doraemon collected to study). He hardly have any significant scenes after his initial defeat. The remake instead gives him a You Have Failed Me.
- Face Death with Despair: Spends the last few moments of his life panicking before a pissed-off Gigazombie melts him.
- Glowing Eyes of Doom: When he reveals himself and starts attacking with his soundwave.
- Literally Shattered Lives: In all versions, his first duel against Doraemon ends with Doraemon using the Deflector Cloth to reflect his supersonic wave into himself, causing Tsuchidama to smash into a rock.
- Pulling Themselves Together: Thanks to being made from "memory clay" from the 23rd Century. Doraemon actually collected a piece of Tsuchidama's arm after defeating him back to present-day to study, and demonstrates its abilities by smashing the piece with a hammer (before a surprised Nobita who asks, "what'd you do that for?"). The smashed piece rejoins itself from smithereens in seconds.
- Ridiculously Human Robots: In the remake, he visibly panics as he begs for his life in front of a pissed-off Gigazombie. It doesn't work.
- Super-Scream: His supersonic wave attack can create nausea, pain, extreme agony for anyone unfortunate enough to be caught in it. The remake gives his waves the ability to shatter rocks.
- Voice of the Legion: Commands the Kurayami Tribe as a mouthpiece for Gigazombie. The remake gives him two voices echoling at the same time (a human and a robotic voice simultaneously).
- You Have Failed Me: In the remake, Gigazombie melts him into a mud puddle for his failure to deliver his slaves on time.
Gigazombie's Robots
- Animal Mecha: The two elephant-headed robots that guards Gigazombie's personal quarters where the Time Distortion Bomb is stored.
- Elite Mooks: The individual dogu-like robots - which Tsuchidama is a mere minion of - are far more dangerous than the Kurayami tribe minions.
- Giant Mook: The two elephant mecha are as large as half the room they're in.
- Mecha-Mooks: Robotic minions of Gigazombie, although in this case they're made of "memory clay".
- Mythology Gag: The two elephant mech's defeat is a nod to General Ganbosu being taken out in the same way in the comic, Doraemon: Nobita's Three Visionary Swordsmen. One of their trunks even sticks out of the ground before completely sinking in, imitating a panel from the manga version.
- Praetorian Guard: (Remake only) Two gigantic elephant robots serve as Gigazombie's personal guards outside the chamber where he keeps the Time Distortion Bomb. They're among the harder minions the heroes need to defeat,
- Pulling Themselves Together: Thanks to being made from memory clay - a high-tech invention from the 23rd Century - Gigazombie's minions can reform back from being shattered to pieces. The climax have Doraemon giving everyone glue-guns to stick them on solid walls and ceilings instead.
- Quicksand Sucks: In the remake, the elephant robots are defeated when Kukuru and Shizuka sprinkle the Donburi Powder around them turning the floor into quicksand. Unlike the smaller robots, the giant elephant mechs are unable to fly, so they immediately sink into nothing.
