They are shown to be a species who will conquer or destroy other planets - most often using giant monsters (daikaiju) called Terro-beasts/Fearbeasts. Their fearbeasts could be one of the following: * A monster they have found and taken control of (such as Gigan). * A monster they had created themselves - which are most often deployed using a 'Terro-Beast Missile', which is launched from the Garoga's satellite. * A Garoga who had transformed into a Fearbeast (such as Spyler). * A group of Garogas that had transformed together into a Fearbeast (such as the Garoga-X agents who would transform into the monster Grotogauros)