It is a huge vehicle type Dimensional Robo which supports "Kaizard", the hero who secures the peace of the planet. It is summoned from another dimension by the catch phrase "Transdimension", and its combination system is activated by the catch phrase "Super Dimensional Combination". It transforms into the breast armor of the transformed "Kaizard" to bring out his Finish Form, "Super Dimensional Robo, Daikaiser". The biggest difference between "Kaisergrader" and other Dimensional Robos is that it doesn't possess a personality, because it is designed as a mecha solely for supporting other units. Due to the solitaire personality of its owner "Kaizard", it was only auto-piloted in the past, but it can be controlled by other pilots now. In addition, "Kaizard" can control it wirelessly by linking their systems. Some may think that it is a mecha that can do nothing except combining with "Kaizard", but they are gravely mistaken, as "Kaisergrader" is armed with dual high-performance beam cannons known as "Kaiser Cannons", which enhances its potential to fight individually.
The Dimensional Robos are...
A tentative name claimed by the mechanical lifeforms coming from another world. It is said that their actual names are constituted by enumeration of sounds that cannot be pronounced by organic life forms. The majority of their bodies are made of unknown material and mysterious technologies. By now, the technical power of Cray can only analyze 10-20% of their bodies. Many of them belong to a vigilante group in their original world, working to arrest the criminals who intervere dimensions, and they believe heavily that protecting Cray is also one of their missions.