[806mtson]

The ZenKaijuu Gear appears to be similar to the Fang Memory as both become dinosaurs, both have part of the legs of that mode become the top of another dinosaur's head, and both get the Main Ranger/Rider their First Major Upgrade/Super Form. I wouldn't be surprised that it is sentient like the Fang Memory. They are basically brothers from another mother.
Meanwhile, I kind of like Super Twokaisar's simpler design.
Fun fact, if you were to actually pronounce Caesar in the actual pronunciation from Greece, it would be pronounced "Kie-zer". Like Kaisar.