Berserkes (Robot Beast), also known as Basarks, are the robots who were created by Delos civilization in Ultraman Max TV Series. They appear in episode 38 and 39. Their creators, are an ancient civilization, but unlike other ancient civilizations showed or mentioned which have gone extinct, the Delos people, went underground to slumber in the wake of a global crises.
They were created to watch over and protect the ancient civilization. When global warming caused the sun's rays to reach even their underground home, threatening the stasis pods, the Berserkes followed their programming and launched an attack on the surface world, knowing about the surface world's protector they made plans to deal with the alien warrior.
Source : Wikipedia.
