Ryushusupercat/Erebos, the Father of Fear (Erebozu; pronounced "EE-ruh-bose") is a primordial Darkness god and a deity of the Dark Clan of Voidstar. He is considered the origin of all fear that living creatures feel.
Erebos was "born" a while after The Elemental Gods were; their powers were used to create him and his "siblings".
Afterwards, he moved from the Hyperverse to Mobius, where he went into hibernation for 100 years. His presence, as well as the presence of Aglibol, Vorhaten, Nyx and Voidstar helped to keep the Elemental Plane of Darkness stable and balanced with the other nine Elemental Planes.