Professor Yumi

• The Professor
• Technical Pacifist

Sayaka Yumi

• Action Girl

The Three Professors

• Those Three Guys

Tsubasa Nishikiori

• Crazy-Prepared
• Knife Nut: Super Alloy Z knife, to be specific.
• Kouji I Am Your Mother
• Magnificent Bitch: Good thing she works with the heroes.

Sensei/Master/Sir

• Awesome yet Practical: Master swordsman and master chef.
• Everyone Calls Him Barkeep
• The Hero: In the Kurogane Five.
• Katanas Are Just Better
• The Quiet One:

Yasu

• Action Bomb: Pretty much his secret weapon.
• Covert Pervert:
• The Lancer: To Sensei.
• Why Am I Ticking?: Averted; he knows he has a bomb in his stomach.

Cross

• The Big Guy
• Everything'sCuterWithKittens: Allows a cat to rest on his head while he sweeps.
• The Quiet One: The other one.
• Robotic Reveal
• Tessho Genda

Django

• BFG: And it can shoot an ice round too!
• Cargoship: He sure loves big rifles.
• Cool Car: An old van that detaches the back and dumps out the unwanted 'guests'.
• Clean Up Crew: Intercepts the 'guests' who have a vendetta against any of the five.
• Cold Sniper
• The Smart Guy
• Squick: Vigorously licking his revolver after taking down a Gamia.

Kikunosuke

• Badass Grandma
• The Chick: Subverted; she is apparently the most dangerous member of the Kurogane Five.
• Flash Step
• Improbable Weapon User: Super Alloy Z string.
• Super Speed

Dr. Hell

• Amazing Technicolor Population: And no, it is never explained why he turns blue between the expedition and the present.
• Bad Boss: For a super robot big bad this is pretty much averted. When a subordinate admits to failing or making a mistake he seems to be pretty patient for a while. For a super robot villain. Which this troper would like to point out is completely unlike any other incarnation of Dr. Hell. What, he manages to get through an entire series without berating Ashura? How the hell did that happen?
• Big Bad
• Names to Run Away From Really Fast
• Obviously Evil: To the point that Tsubasa picked up on his plans for world domination early on in the Bardos Expedition.
• Well-Intentioned Extremist: Subverted, His idea of saving the world from the Mycenae Empire is to conquer it first and rule it with an iron fist.
  • However, Dr. Hell's acquisition of the Knowledge in Saisei-Hen allowed him to discover the location of the sunken Bardos Island begin plumbing its depths for the secrets of the Mycenae Empire. His goal is ultimately to conquer the world and unite it under his rule, in order to utilize all of mankind's means together to fight the enemy.
• Villain Team Up: Works with the Gishin Empire in Super Robot Wars Z 2

Baron Ashura

• The Dragon
• Dragon with an Agenda: After The Reveal that Dr. Hell dissolved the other halves of Tristan and Isoulde.
• Driven to Suicide: With a twist.
• Thanatos Gambit: In the final episode, it kills itself to free the Mycenae Empire.
  • Spanner in the Works: However in Saisei-Hen, Gaiou already destroyed the Mycenae.
• The Woobie

Count Brocken

• Action Bomb: His doppelgangers can self destruct.
• Dirty Old Man: There's a very funny scene in Scenario 47 of Saisei-Hen. If you attack Count Brocken with a woman, he'll make a comment about opening their (the mecha's) cockpits to see the beauties inside, and suddenly, a lot of ZEXIS girls will start calling him names, like Womanizer, Pervert, Weirdo. Kallen even wanted to treat Brocken's head like a soccer ball. Brocken was surprised at these reactions to his statement.
  "I didn't do anything yet!"
• Doppelgänger Attack:
• Memetic Mutation: BrockenBall! Everyone wins except for the ball, which is Brocken!
• Never Live It Down: Try to take him seriously after the BrockenBall scene.
• Ninja Pirate Zombie Robot: He is an undead decapitated cyborg Nazi... and a soccer ball.
• Those Wacky Nazis

Viscount Pygman

• Badass in a Nice Suit
• Captain Ethnic (pygmy shaman)
• Evil Genius: Of the magic type.
• Eye Scream: Gouged his eyes to rescue Ashura.
• Pet the Dog: Comforts Ashura after Doctor Hell punishes it for a series of failures.
• Scary Black Man: At least the look he usually has is pretty cool.
• Squishy Wizard: Once his fake body is lost his true form gets smacked aside by Shiro.

Kenzo Kabuto

• (can't put anything here because of the Spoiler)

Boss

• Joke Character: Boss Borot.
  • Lethal Joke Character: He does some serious damage to Mechanical Beast Baron Ashura during his debut.
• Only Known by Their Nickname: Lampshaded via Breaking the Fourth Wall.

Detective Ankokuji

• Audience Surrogate: Shades of it at first.
• Badass: Cemented when he's surrounded by about twenty of Ashura's goons in episode 8. Next we see them they've all been clobbered. Without Kikunosuke either.
• Butt Monkey:
• Cargo Ship: invoked He loves Gamias due to being blonde and having interesting assets.
• Covert Pervert: With Shiro and Yasu in episode 10.
• Intergenerational Friendship: With Shiro.
• Odd Couple: Again with Shiro.

The Narrator

• Hot Blooded
• Lemony Narrator: Via Hot Blood and over-the-top descriptions.
• Large Ham: Lampshaded by Breaking the Fourth Wall.
• Tessho Genda