The Flame Tribe
Tenma Kudou / Sazer-Tarious
- Animal Motifs: The Falcon
- The Hero: He's the most visible Tribe Leader.
- Hot-Blooded: As is fitting of a member of the Flame Tribe
- The Leader: of the Flame Tribe.
- The McCoy: Of the Flame Tribe's Freudian Trio.
Mika Shidou / Sazer-Mithras
- Animal Motifs: The Swan
- Cool Big Sis: To Ken
- The Lancer: Her more straight forward personality contrasts Tenma's Hot-Blooded-ness.
- The Spock: Of the Flame Tribe's Freudian Trio
Ken Shidou / Sazer-Lion
The Wind Tribe
Akira Dentsuin / Sazer-RemIs
- Animal Motifs: The Rhinoceros Beetle
- The Leader: of the Wind Tribe.
- Love Makes You Crazy: Or rather, Love Makes You Stay With An Evil Alien.
- The Smart Guy: He also happens to be a doctor.
- Sugar-and-Ice Personality: He may seem cold and distant at first, but he can be compassionate if the situation calls for it.
- Unwitting Pawn: Of Karin for the first few episodes.
Ryoko Amemiya / Sazer-Velsou
- Animal Motifs: The Butterfly.
- Luckily, My Shield Will Protect Me: Her armor comes with twin bucklers.
- The Smart Guy: The first one to see Karin for who she really is.
Jin Hakariya / Sazer-Dail
The Earth Tribe
Naoto Matsuzaka / Sazer-Tawlon
Ran Saotome / Sazer-Visuel
- Absurdly Sharp Blade: Her claws.
- Animal Motifs: The Leopard.
- The Chosen One: She's the Communicator, giving her the ability to speak to the Warp Monarch's Will.
- Heroic Sacrifice: Attempts to get Algol to kill her when she learns she's a Bosquito. Subverted, as she's not really a Bosquito, but the Communicator, so letting herself be killed would have been a Senseless Sacrifice.
- Wolverine Claws: Lady Claw.
Go Kamiya / Sazer-Tragos
The Water Tribe
- Animal Motifs: The Shark.
- Cool Sword: Gains one from activating his armor.
- Ineffectual Loner
- The Leader: of the Water Tribe
- Team Dad
- Anti-Villain: They're only attacking humanity because they believe them to be the descendants of the Bosquito. The reason why they destroyed the ancient Earth civilization several million years ago was because of the Bosquito running rampant on it.
- The Empire: Subverted. The only reason they're attacking Earth is because they were tricked by Belzeus into thinking the humans were Bosquito.
- The Federation [[spoiler:Ultimately closer to this than The Empire, as they are an alliance of alien planets who are only targeting Earth because they believe humanity to be the descendants of the Bosquito.
- Omnicidal Maniac: They seek to exterminate humanity and have already exterminated at least one ancient human civilization.
- Unwitting Pawn: They are merely being used by Belzeus to wipe out humanity so he can claim Earth.
- Always Chaotic Evil: All of the Impactors we've seen have been evil Proud Warrior Race Guys. Subverted by Logia when he pulls a HeelFace Turn.
- Evil Counterpart: Being a trio of dark-armored warriors makes them one to all the Gransazer tribes.
- Proud Warrior Race Guy: All of them are very proud, but honorable warriors.
- Terrible Trio: Subverted. While there are three of them, they never actually show up all at once to form one.
- Enemy Mine: After Belzeus steals DaiLogian from him, Logia shows up to assist the Gransazers multiple times.
- Gunslinger: Wields the Hiro-Sniper.
- The Heavy: He's the most recurring Warp Monarch agent shown.
- HeelFace Turn: By the end of it, he doesn't really care about his mission anymore and just wants to stop fighting.
- The Leader: of the Impactors.
- The Rival: To Tenma
- Unexplained Recovery: Blows himself to bits as part of a Villainous Breakdown, but returns later, with no explanation given, other than his anger allowed him to survive.
- Dark Action Girl: She's an Action Girl and she's fighting on the side of the villains.
- The Dragon: To Logia once he shows up
- Tragic Villain: Her last ditch effort to defeat the Gransazers results in her death, which drives Logia to a Roaring Rampage of Revenge
- The Conspiracy: Several are involved in one with Belzeus to fool the Warp Monarch into thinking the humans are Bosquito and locate the Communicator.
- Bad Boss: Sends Luka to her death by having her unseal a dangerous Omnicidal Maniac as part of his Evil Plan.
- Big Bad: He's the one behind the Earth invasion, as he tricked them into invading it so he could use it as the first step up of his plan to become a Galactic Conqueror.
- The Chessmaster: Fooled an entire intergalactic government into thinking humans were Bosquito and successfully unsealed a member of said Bosquito and got away with it in order to get the Warp Monarch to attack the Earth in full fury.
- Corrupt Politician: Stated to be a member of Warp Monarch's highest council and, if any of the other tropes on this page are of any indication, he's very corrupt.
- Despotism Justifies the Means: Perfectly willing to instigate the genocide of an entire species just so he can use their planet as a stepping stone to grip the universe.
- Evil Laugh: Prone to laughing when his plans are going as planned.
- Galactic Conqueror: Seeks to become one by using Earth as a foothold.
- Genius Bruiser: In addition to being a cunning Chessmaster, he's also able to take on and defeat multiple Gransazers.
- Last Villain Stand: After Ran gets the Warp Monarch's Will to call off the invasion, Belzeus attempts to use Cabyron to destroy the Gransazers. His "Last Stand" lasts for about 30 seconds, after which he's captured by Logia.
- The Man Behind the Man: He's behind the Warp Monarch and their invasion of Earth, using them as pawns for his goal of galactic conquest.
- Near-Villain Victory: Almost succeeds in killing Ran, which would had left humanity with no other way to contact the Warp Monarch's Will and expose the truth about humanity.
- "Ass" in Ambassador: Though in this case, his assholeishness comes from the fact that he assisted a wannabe-Galactic Conqueror in the attempted genocide of an entire species.
- Dirty Coward: Pretends to beg for his life when he's confronted by our heroes so he can launch a sneak attack on them. Thankfully he's killed by Logia before he can do so.
- Evil Genius: Of Belzeus' crew. He uses deceit to locate the Communicator and leaves the dirty work up to Algol.
- Shock and Awe: Appears to possess some form of electrokinesis.
- The Brute: Used by Brighton to do his dirty work.
- The Dragon: He appears to be Belzeus' top agent, and reports directly to him.
- Taking You with Me: Suicide-bombs Ruby to complete his mission.
- The Dragon: Fitting, as it is a Dragon. It's also Belzeus' last line of defense.
- Instant Awesome: Just Add Dragons!: Space Dragons.
- Unwitting Pawn: Used by Belzeus to revive the Bosquito.