Who is the eight-year-old Altman's brother?

Altman's patron saint for eight-year-old children is Diga Altman. Diga Altman, the protagonist in the Japanese round valley special "Diga Altman" and its derivative works, is also the first Altman with the ability of morphological transformation. In the 52nd episode of TV edition, Diga, who was knocked down by Gatankiu and turned into a stone statue, accepted the light in the hearts of children who believed in Diga Altman all over the world and became Glitter Tiga. Diga Altman, the giant of light who guarded ultra-ancient people 30 million years ago, became a stone statue after the demise of ultra-ancient civilization.