They were members of the Earth bound Ultramen, but unlike them they were giants of Darkness. It was they who caused a civil war that destroyed the Earth Ultramen civilization. However Tiga turned on them due to falling in love with the original Human Yuzare, the leader of the Earth Defense Organization at the time. One by one Tiga absorbed their powers, Darramb's power to give him Power Type, Hudra's speed to give him Speed Type and Karmilla's energy manipulation to give him Glitter form. The three dark giants were locked away as stone statues in the ruins of Lulu Island where the Ultras once lived. In time, before the cataclysm that destroyed the ancient human civilization, Tiga and the few Ultra survivors left Earth for the Land of Light with Tiga and two others leaving replicas of their forms for future generations.
The three waited at the bottom of the sea as Lulu island had became the undersea home of the ancient darkness, but during the dark ruler's rise the island returned to the surface along with the giant's cell.