Why did Altman come to earth in the cartoon Complete Works of Altman?

There are many complete works of Altman, most of which have only one Altman, but some have several Altmen. Then why did these ultramen come to earth? Do they belong to the earth? Next, I will explain this problem to you.

In fact, Altman comes from Altman planet, many light years away from the earth. Altman came to earth by accident. Because of a spaceship accident, Altman was forced to land on the earth. Because the spaceship broke down, I didn't have much energy left, so I couldn't return to Altman, but stayed. From this, I have met many kind people, and I am constantly helping the people of the earth and maintaining the peace of the earth. Later, Altman slowly established deep feelings with human beings. Altman itself is to maintain peace, and the earth needs Altman's help. Later, the planet Altman got in touch with Altman on the earth, and a good friendship developed between the two planets. In the end, Altman Planet sent their Altman soldiers to the earth to help the people of the earth, protect their lives and defeat those powerful monsters. So there are many beautiful memories between Altman and human beings. This is why Altman came to earth. I hope my answer can help you.