! Eiji Shigure
-->'''Voiced by:''' Creator/KenichiSuzumura (JP), Creator/ChrisPatton (EN)

* AchillesInHisTent: In the first season, after [[spoiler:Touga attempts to ShootTheDog and kill Cecile along with the Zeravire of the week]].
* {{Foil}}: To Touga.
* GetAHoldOfYourselfMan: [[spoiler:Gives one to Touga in Zwei.]]
* TheLancer
* SupportingProtagonist

! Touga Tenkuji
-->'''Voiced by:''' Creator/JunFukuyama (JP), Creator/GregAyres (EN)

* TheAce
* ChasteHero
* {{Deuteragonist}}: The show's other main character, after Eiji.
* FishOutOfTemporalWater: In episode 5 after stepping out of Sanjelman Castle with Eiji to visit the city.
* GeniusDitz: Touga is an extremely skilled mecha pilot and commander... and also a complete airhead.
* TheHero: As the pilot of the Gran Kaiser, he is this despite not being the actual main protagonist.
* PrincelyYoungMan
* TalkingToHimself: With [[CodeGeass Lelouch]] [[TheChessmaster Lamperouge]] and [[Anime/MacrossFrontier Luca Angelloni]] in ''VideoGame/{{Super Robot Wars Z}}2''.

! Luna Gusuku
-->'''Voiced by:''' Creator/HarunaIkezawa (JP), Creator/LuciChristian (EN)

* GenkiGirl
* TalkingToHerself: With [[Anime/DancougarNova Aoi Hidaka]] in ''VideoGame/{{Super Robot Wars Z}}2''.
* {{Tsundere}}: Type A for Eiji, Type B for Touga.

! Ena
-->'''Voiced by:''' Creator/MaiNakahara (JP), Creator/JessicaBoone (EN)

* [[spoiler:BackFromTheDead]]
* [[spoiler:HeroicSacrifice: To save Touga, in Zwei.]]
* {{Meido}}
* ProperLady: In sharp contrast to [[{{Tsundere}} her copilot]].
* [[spoiler:RidiculouslyHumanRobots]]
* [[spoiler:SuperPoweredRobotMeterMaids]]
* YouGottaHaveBlueHair: Green, [[spoiler:and later pink]].

! Mizuki Tachibana
-->'''Voiced by:''' Creator/YuuAsakawa (JP), Creator/KiraVincentDavis (EN)

* BoobsOfSteel: far bustier than the other female grandknights and is the only one with any kind of hand-to-hand combat skills.
* GagBoobs
* HardDrinkingPartyGirl
* [[spoiler:TheMole]]
* MsFanservice
* ObfuscatingStupidity: Part of her HardDrinkingPartyGirl image is an elaborate act to hide [[spoiler: she's very good with computers and an EFA intel officer.]]
* UnresolvedSexualTension: 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.
* PigeonholedVoiceActor: CreatorYuuAsakawa as a MsFanservice with large breasts. [[SarcasmMode Surprising, eh?]]

! Leele [[spoiler:Zeravire]]
-->'''Voiced by:''' Creator/HoukoKuwashima (JP), Allison Keith (EN)

* HeroicBSOD: After learning [[spoiler:that Sandman is her father]], and [[spoiler:she is an alien]].
* [[spoiler:HumanAliens]]
* MysteriousWaif
* [[YouGottaHaveBlueHair You Gotta Have Lavender Hair]]

! Klein Sandman ([[spoiler:Zieg Zeravire]])
-->'''Voiced by:''' Creator/ShowHayami (JP), Creator/JasonDouglas (EN)

* AscendedFanboy: Definitely seems like it.
* {{Bishonen}}
* [[spoiler:CainAndAbel: The Abel to Hyugi's Cain, due to marrying the latter's sister.]]
* [[spoiler:DeathSeeker]]
* HeroicBSOD: In Zwei. [[spoiler:Ayaka!]]Raven snaps him out of it.
* [[spoiler:HumanAliens]]
* IAlwaysWantedToSayThat: He always wanted to introduce the titular mecha in an awesome way; he gets to.
* [[spoiler:IgnoredExpert]]
* [[spoiler:{{Immortality}}: He is at least four hundred years old, but is implied to be much, much older than that. He loses this at the end of the series, though, when he activates the Gran Sigma.]]
* LargeHam
* [[spoiler:[[LukeIAmYourFather Leele I Am Your Father]]]]

! Raven ([[spoiler:Ayaka Shigure]])
-->'''Voiced by:''' Creator/HikaruMidorikawa (JP, Raven), Creator/VicMignogna (EN, Raven), [[spoiler:Creator/MichikoNeya (JP, Ayaka), Kim Prause (EN, Ayaka)]]

* [[spoiler:BecomingTheMask: Anyone wearing the Raven mask gains access to the memories of past Ravens.]]
* [[spoiler:{{Bifauxnen}}: This one, at least.]]
* CharClone
* TheComicallySerious
* CoolMask
* DrillSergeantNasty: Especially from Eiji's perspective.
* [[spoiler:LegacyCharacter: 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.]]
* [[spoiler:TransferableMemory: His mask.]]

! Faye Lin Xu
-->'''Voiced by:''' Creator/SaekoChiba (JP), Stephanie Nodolny (EN)

! [[spoiler:Hyugi Zeravire]]
-->[[spoiler:'''Voiced by:''' Creator/KenyuHoriuchi (JP), George Manley (EN)]]

* [[spoiler:BigBad]]
* [[spoiler:CainAndAbel: The Cain to Sandman's Abel, if only by marriage.]]
* [[spoiler:EvilKnockoff: As the name would suggest, his Zeravion is a Zeravire equivalent to the Gravions.]]
* [[spoiler:EvilUncle: He's Leele's.]]