“Ultraman Ginga” is a rarity, made without digital graphics.Credit...Ko Sasaki for The New York Times CHOFU, Japan — Daisuke Terai plays one of the best-known characters in the history of science fiction, but few fans have ever seen the actor’s face. That is because Mr. Terai puts on a bright silver and red rubber suit before stepping onto a set made of miniature trees and buildings to do battle a