Male 14.6m As the captain of the Speranza, he led Red Blitz, Cielo, and Musclehide on a mission to find a new home for the Metal Cardbots. However, he became involved in an incident and arrived on Earth 4,000 years ago, where he began interacting with humans through Mukara. He possesses a dignified yet benevolent personality and holds various virtues befitting the rank of Commander. He takes care of the crew members who served with him and possesses high leadership skills, earning their absolute trust. He is a broad-minded individual who, rather than holding Red Blitz accountable for the grave mistake of crashing the Speranza into Earth, chose to watch over his growth and work together to make up for the error. Rex Arm ↓ A large gauntlet equipped on the left arm. It features an angular design shaped like a Tyrannosaurus head. In close combat, it is used like a pincer to attack enemies, and in long-range combat, it fires flames from the muzzle. Weapon Card - Rex Blade ↓ Wrist blades deployed from both forearms. They cannot be deployed when the Rex Arm is equipped because the blade exit is blocked. Since the Rex Arm is already useful in close combat, the Rex Blade is rarely used to cause major damage, but its performance is certainly powerful. It is not used as a primary weapon but as a backup when the Rex Arm is disabled. Death Grip ↓ Deploys the Rex Arm's pincers to firmly grasp and crush the target. Befitting the name 'Death', it demonstrates incredible grip strength. Rex Inferno ↓ Gigantrex's ultimate move. As an area-of-effect attack, he slams the Rex Arm, imbued with flame energy, into the ground. As a long-range technique, he radiates flames or fires them in a beam, showing enough firepower to incinerate the entire surrounding area. However, it has the disadvantage of high energy consumption if fired for a long duration. Extremely powerful.

Male 6.2m He has a hot-blooded and fiery personality. He is reckless and impulsive enough to use any means necessary to achieve his goals, yet he also has a childlike side that makes him back down immediately when things get unfavorable. These personality issues have been pointed out by Cielo, Musclehide, and Captain Gigantrex, and he seems to be aware of them himself. However, he cherishes his friendship with his comrades, so he welcomed them warmly when they woke up on Earth after 4,000 years, and he regards his past interactions with Mukara as a pleasant memory. In particular, he treasures Gigantrex, who watches over his growth, feeling grateful to him and harboring guilt for the accident he caused. He is not just a mindless hothead; he is a person with as much affection as he has anger. Weapon Card - Boost Gambiera ↓ Weaponry in the form of platform shoes. It is a type that retracts the existing feet and attaches additional parts. A two-pronged claw-like structure is attached to the toes, engraved with a yellow flame pattern. Organizer ↓ A device stored inside the V6 blower on the chest. It can open teleportation portals whose size can be adjusted through manipulation. This is not a unique ability of Red Blitz. Crimson Kick ↓ Delivers a kick while wrapping his legs in red energy. Combined with Red Blitz's leg strength, the durability of the Boost Gambiera, and flame energy, it boasts significant power and is Red Blitz's primary skill. He calls Gigantrex 'Captain' and refers to everyone else by their names.

Female 7.6m Contrary to her cautious and cold appearance, she has an unexpectedly cheerful and bright personality. She is kind to her comrades but also plays pranks, showing a very friendly side to those she is close with, and she possesses a sense of common sense. However, she is somewhat prickly toward enemies and uses a sarcastic tone to provoke them during confrontations. When angry or excited, she becomes very hasty and her judgment clouds, which occasionally leads to small mistakes. Weapon Card - Nitro Express ↓ Weaponry that transforms into twin machine guns. It is firmly fixed through joints on the lower forearms. Homing Magnum ↓ A technique that fires guided energy rounds to attack, capable of tracking even invisible enemies. It boasts higher power than the Sky Jet Shot and is fired in the smallest possible quantities to avoid detection by the enemy.

Male 8.3m Unlike his large build, he has a sensible and gentle personality. Along with Blue Cop, he is one of the few Cardbots who was not hostile to Jun's group from the beginning. Like other Cardbots, he can be a bit hasty and often tries to step forward, but basically, he dislikes fighting and stands out for his tendency to resolve things through dialogue whenever possible. Weapon Card - Crane Vouge ↓ A battle axe created by combining the axe blade from the Weapon Card with a mace. The axe blade is mounted on the opposite side of the meat tenderizer, and a crowbar deploys from the tenderizer side. Bronto Strike ↓ A technique that strikes the target with the energy-wrapped Crane Vouge. It boasts enough power to cause powerful cracks if slammed into the ground.