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Gran Knights
Eiji Shigure
Voiced by: Kenichi Suzumura (JP), Chris Patton (EN)
Our main protagonist and actually The Lancer of the team, Eiji is a hot-tempered school boy who is looking for his missing sister Ayaka, only to find himself recruited into the Earthgertz as one of the Gran Knights of Sandman. He ends up being the 'voice of reason' to the clueless main pilot Touga, due to them being boys.
- Achilles in His Tent: In the first season, after Touga attempts to Shoot the Dog and kill Cecile along with the Zeravire of the week.
- Foil: To Touga.
- Get A Hold Of Yourself Man: Gives one to Touga in Zwei.
- The Lancer: To Touga. If he wasn't, Touga wouldn't have learned restraint in combat to prevent casualties in the first place.
- Master of Disguise: Can disguise as a woman believably enough to get other men to flirt with him, much to his chagrin. He even uses actual prosthetic breasts to help things.
- Red Oni, Blue Oni: Red to Touga's Blue, being more emotional and hotblooded than the more reserved and polite Touga.
- Restraining Bolt: Part of the reason he was brought in as a Grand Knight was because they did such a good job raising Touga to fight at the exclusion of nearly everything else, that Touga didn't know how to avoid casualties and collateral damage when actually fighting, and the other Knights were too into the I Did What I Had to Do mentality to even think of getting him to stop, or just didn't know any better either.
- Supporting Protagonist: He's the protagonist, but Touga's the leader.
- Vitriolic Best Buds: With Luna. Eiji rarely ever misses picking on Luna for being too violent or hotheaded for a woman (and she returns it by pointing out his moments of stupidity) and they tend to argue A LOT. But when push comes to shove, Eiji still considers her one of his best friends.
- Wholesome Crossdresser: Eiji ends up wearing a dress quite often over the course of the series(at least twice of his own volition), and is always pretty chill about it.
Touga Tenkuji
Voiced by: Jun Fukuyama (JP), Greg Ayres (EN)
The main pilot of Gravion, Touga has been raised since childhood for the job, handpicked from his original orphanage by Sandman himself. He lived a sheltered life, therefore came off as naive and clueless on many things, but he had a good heart.
- The Ace: Trained all his life since childhood to pilot the Gran Kaizer and the Gravion. This is NOT a good thing, in spite of how polite and well mannered he is.
- Chaste Hero: Not really by choice, but mostly because he doesn't QUITE get romance yet due to his unusual upbringing.
- Child Soldier: All his life he was raised just to fight the Zeravire. One of the reasons why Eiji was brought into the fold was so he could have contact with another boy his age and help actually socializing in contexts outside of what he's used to in the castle. The other being because Eiji serves as a living Restraining Bolt to keep Touga from losing himself in fighting. Because he's so polite and well mannered, he just seems like a naive but pleasant airhead at first, his deeper issues not actually apparent.
- Deuteragonist: The show's other main character, after Eiji.
- Raised by Wolves: In episode 5 after stepping out of Saint Germain Castle with Eiji to visit the city, he shows just how isolated he has been from contact outside of the castle with how clueless he is regarding society, specially with how he doesn't seem the least bit perturbed by Eiji's method of sneaking out of the castle by dressing in drag AND using prosthetic breasts.
- Genius Ditz: Touga is an extremely skilled mecha pilot and commander... and also a complete airhead.
- Gone Horribly Right: At the beginning, he would focus solely on destroying opposing Zeravire unites and nothing else, not even so much as considering avoiding collateral damage or casualties. He nearly got Cecile, one of the younger maids, and Eiji, who is basically HIS BEST FRIEND, nearly killed during a Zeravire attack because he wouldn't hold back on attacking while Eiji rescued Cecile from danger in the middle of a fight. It wasn't out of malice, he just didn't know any better because his training didn't cover anything BUT combat.
- The Hero: As the pilot of the Gran Kaiser, he is this despite not being the actual main protagonist.
- Princely Young Man: In spite of being clueless regarding normal human contact, he's always soft spoken and polite.
- Red Oni, Blue Oni: The Blue to Eiji's Red, being the more disciplined and focused of the two, at least in combat. In social situations, he's more polite and reserved than Eiji, who looks very crass in comparison, but not without warmth.
Luna Gusuku
Voiced by: Haruna Ikezawa (JP), Luci Christian (EN)
One of the two pilots of G-Driller that eventually forms up the arm. Luna is an energetic Okinawan girl that came to Sandman's group while looking for her missing father.
- Genki Girl: Her most notable trait is how she is always full of energy.
- Little Miss Badass: She's 14, just so you know. And yet, she's really fiery when it comes to battle.
- Parental Abandonment: Both her parents are dead, she lost her mother as a child and her dad died during the initial Zeravire attack.
- Rocket Punch: She's the go-to pilot that gets literally launched whenever Gravion uses the Graviton Pressure Punch. She handles it much better than Ena.
- Tsundere: Type A for Eiji, Type B for Touga.
Ena
Voiced by: Mai Nakahara (JP), Jessica Boone (EN)
One of Sandman's many-many maid and also another pilots of the G-Driller. Ena is more or less reluctant about battles, but did her best to maintain between fighting Zeravire and taking care of the castle.
- Big Damn Heroes: In Zwei during the big Zeravire invasion she arrives with the Sol Sigma Gravion which makes the Gran Knights recover their spirits and gives them the power to destroy all the enemies.
- Heroic Sacrifice: Self-destructs her vehicle to take out a Zeravire and save Touga in Zwei.
- Meido: She is one of the many maids that work at the castle.
- Proper Lady: In sharp contrast to her copilot.
- Rocket Punch: Sometimes she gets literally launched for Graviton Pressure Punch. Unlike her copilot, however, Ena usually doesn't take it well, screaming out of her lungs whenever launched. Not even changing to her old body fixed that.
Mizuki Tachibana
Voiced by: Yuu Asakawa (JP), Kira Vincent-Davis (EN)
The token adult of the Gran Knights, Mizuki is an incredibly busty lady, a skilled hacker and overall reasonable individual who was a friend of Eiji's sister Ayaka and was also looking for her, though she likes to get knocked on beer. She's the pilot of G-Striker, forming one of the legs.
- Cool Big Sis: She is by far the big sister figure of the Gran Knights, since she's the token adult. Likewise, she's highly looked up by Faye as her big sis.
- Everyone Has Standards: When she completed her job as a spy, she was given a luxury residence to retire. But she doesn't exactly like the president she was spying for bragging on how the Gran Troopers built from her information was made to one-up the Gran Knights after a lot of time Gravion helped defending the Earth, she wanted her information to be used so the EFA can catch up and actually be of use in defending Earth, like being an equal to Gravion.
- Expy: Of Excellen Browning Lets see: Gorgeous, blue eyed, busty blond, wears stripperific outfits, in charge of God Gravions Graviton Rifle, ard drinking party girl, cool big sis, smarter than look and shows a suprisingly tougher, no-nonsense side when the situation
- Hidden Depths: If you get past her overblown fanservice elements, Mizuki is actually a little more insightful than you think. Read the spoilers peppered around her tropes to see why.
- The Mole
- Ms. Fanservice: Sole adult, gigantic boobs, alluring voice. Mizuki is the shining example of Obari female fanservice.
- Obfuscating Stupidity: Part of her Hard-Drinking Party Girl image is an elaborate act to hide she's very good with computers and an EFA intel officer.
- Pigeonholed Voice Actor: Yuu Asakawa as a Ms. Fanservice with large breasts. Surprising, eh?
- Token Adult: She's the only adult amongst the pilots of Gravion, though not amongst all of the Gran Knights (since Sandman and Raven are also adults)
- Unresolved Sexual Tension: Has a hefty amount of this with Eiji, who gets to see her rarely shown serious side, and whom she hits on repeatedly, both in private and in public.
Leele Zeravire
Voiced by: Houko Kuwashima (JP), Allison Keith (EN)
A shy young girl that was holed up in one of the towers in Sandman's castle, with them being close and she had a pet ferret named Lolotte. Leele is the pilot of G-Shadow, a stealth plane that could turn into a boomerang and formed up Gravion's chest. Her parents died in a fire, and thus she has a fear towards fires... especially blue ones...
- Heroic BSoD: After learning that Sandman is her father, and she is an alien.
- Human Aliens
- Shrinking Violet: She's chronically shy and had a hard time opening up with others due to a traumatic past about 'her parents died in a fire'. Of course, that's not her exact past...
- Why Did It Have to Be Snakes?: Blue Flames. It was a hint that her past isn't as it was publicly stated.
Klein Sandman / Zieg Zeravire
Voiced by: Show Hayami (JP), Jason Douglas (EN)
The main benefactor of the Gran Knights/Earthgertz, a stylish, charming and shrewd billionaire businessman, owning his own private St. Germain's castle. Sandman is Leele's uncle and Eiji suspect that he has something to do with the disappearance of his sister Ayaka. He forms the Gran Knights and gives permission to their main weapon, the huge robot Gravion due to predicting the invasion of the Zeravire, and that only Gravion stood a chance against them.
- Big Good: As the leader of the Gran Knights he is this.
- Cain and Abel: The Abel to Hugi's Cain, due to marrying the latter's sister. Sandman is opposed to using his inventions to kill other people to solve their overpopulation crisis, while his brother is more towards using it to wage war.
- Death Seeker: In the end of the series, he's content in dying with his brother in order to atone for his sins of bringing the Zeravire into the world. The Gran Knights and everyone made him change his mind.
- Heroic BSoD: In Zwei. Ayaka!Raven snaps him out of it.
- Human Aliens: Sandman is not a native of Earth, he came from the planet Llambias.
- I Always Wanted to Say That: During a sortie, once Gravion finished combining, he suddenly declared the mech's name in a booming voice despite not piloting. When Raven asks, his reasoning is that he always wanted to introduce the titular mecha in an awesome way.
- Ignored Expert: He already knows just how dangerous the Genocidron system is, having been involved in its development and proposed an alternative to solve the Llambias problems. He got ignored for it and things escalated to hell for his planet.
- Immortality: He is at least four hundred years old, but is implied to be much, much older than that. He loses it at the end of the series when he pilots the Gran Sigma.
- Large Ham: He certainly knows a great style and flair, the stylish man he is.
- Locked into Strangeness: His hair was originally blonde before piloting the Gran Sigma which turned it purple and made Sandman inmortal, it reverts back to normal when he pilots the God Sigma Gravion for the final battle.
- Luke, I Am Your Father: For the most part, he's presented as Leele's uncle. The truth is... Leele is actually his biological daughter, and he's trying his best not to let the truth come out just so it doesn't heap up to her trauma.
- Mundane Made Awesome: He has a tendency to make several normal things look a lot more epic than it is. His Face Framed in Shadow of telling the Gran Knights to combine not epic enough? He'll one up it by dressing in grand clothes, and issuing the orders while riding atop of a plane. Playing ping pong? He'll just own his oppositions with sandals, and also goes Calling Your Attacks while doing so.
Raven Ayaka Shigure
Voiced by: Hikaru Midorikawa (JP, Raven), Vic Mignogna (EN, Raven), Michiko Neya (JP, Ayaka), Kim Prause (EN, Ayaka)
- Bifauxnen: The current one at least.
- The Comically Serious: When dealing with his boss' extravagant habits Raven can only get exasperated.
- Drill Sergeant Nasty: Especially from Eiji's perspective.
- Legacy Character: The present Raven is Eiji's sister Ayaka, the one before was Luna's father; it dates back to Sandman's assistant on his home planet.
- The Stoic: Raven rarely shows emotions or raises his voice.
- Not So Stoic: There are moments when he gets overwhelmed and shows his true feelings, like being angry at being left behind while Sandman and the Gran Knights were at the beach, or crying Tears of Joy upon receiving a ticket for a hot spring trip.
- Transferable Memory: Anyone that wears the mask will obtain the memories of previous wearers, this is how Ayaka learned Sandman's objetive.
Others
Faye Xin Lu
Voiced by: Saeko Chiba (JP), Stephanie Nodolny (EN)
Originally from the same orphanage as Toga, she was trained to be the pilot of the Gran Kaiser due having a better G-Factor until Sandman decided Toga was better suited for the role, this event left Faye resentmenful towards both which made her join the EFA with the objetive of showing she was better than them.- Manipulative Bastard: She had no issue trying to manipulate Toga when the poor guy was mentally wrecked.
- Refused by the Call: As mentioned above she was picked to be Gravion's original pilot before Sandman changed his mind.
Antagonists
The one behind the Zeravire
Hyugi Zeravire
Voiced by: Kenyū Horiuchi (JP), George Manley (EN)
- Big Bad: As the one who controls the Zeravire he is this.
- Cain and Abel: The Cain to Sandman's Abel, if only by marriage.
- Evil Knockoff: As the name would suggest, his Zeravion is a Zeravire equivalent to the Gravions.
- Evil Uncle: He's Leele's.
- Well-Intentioned Extremist: His wish to save his planet was genuine, unfortunately his plans were too extreme.
