Dana Altman, who appeared in Heisei period, as the successor of Diga Altman, still has the power of multi-form transformation. In addition, Dinah Altman's own strength enables him to better fight against invaders, thus truly guarding the peace of the earth. Here, I personally think that Dana Altman's coming to the country of light has a lot to do with Sophia, the grandmother of the dark planet. I will give you a detailed answer about the specific reasons.

Dana Altman keeps fighting Sophia, the grandmother of the dark planet, in the TV version. Many monsters that appeared before are also Sophia synthetic beasts, which means that the last BOSS Sophia is the villain that really runs through the whole work. Before, Dana defeated all the monsters on her own. But at the end of the battle with Sophia, they were directly sucked into the black hole and then disappeared.

For Sophia, the grandmother of the dark planet, there is no ontology, just a gas in the universe. Sophia's core is his brain, and the only way to defeat him is to destroy his brain. There is no other way than the first time. In the face of Dinah Altman and her battle, Dinah Altman will eventually be sucked into Sophia's black hole because of the strong dark attraction created by Sophia.

Then Dana Altman appeared, indicating that he had defeated Sophia. Although the true story is not shown, in the introduction of Sophia's power, the destructive power of darkness is powerful, and even if the light is inhaled, it cannot escape smoothly. Since Dana can appear again, he must have defeated Sophia to escape. But to say why he came to the country of light, besides the appearance of Sophia, it is also related to the battle of beria. If it weren't for the battle with beria in the monster graveyard, Dana Altman would never have come to the land of light.