Repeat after me: BIG. FAST. IRRITABLE. UNSTOPPABLE. According to the book, about 500 meters long, weighing in at about 500,000 tons and traveling at Mach 30. Whatever that means. The universe itself made this guy in order to preserve order amongst the stars. And because the battling between the Gohma and the Dairanger was becoming too loud, and it thought they were going to mess with the universe, it came down from the stars to tell them to stop it. Or else. And it demonstrated the "or else" by taking out a considerable chunk of Tokyo with a plazma blast.

Daijinryuu had very strong views on the matter. It did not care who was good or who was evil. It only cared that this petty war could spill out and become a threat to the rest of the universe. It terrified Daimugen, who tried to face it anyway and only ended up getting stood on for his troubles. Its arrival forced Kaku to go to the Gohma Emperor to petition him to stop the war, or at least keep things at a "civilized" level. When Daijinryuu made it very plain that the Gohma Emperor had no power over it, and Kaku had to save the man from falling down a very deep hole, well... the Emperor decided to listen to reason, and pulled in the reins on Shaddam and his two cronies. But unfortunately it only granted everyone a temporary respite. Shaddam trying to get Kou escalated matters again, and Daijinryuu returned. But when it figured out which side was to blame, attacked the Gohma homes. And Shaddam sued Kaku to return to the Gohma, or he would gladly escalate things again. So for the sake of the world....

*sigh* I generally like Power Rangers, really I do. But how they decide to treat assorted things they buy from the Sentai series is really annoying. They turned a stellar god into a fancy family CAR, for godsakes!