Etelgar is an evil being who flew around all time and space in the Castle of Space-Time along with Alena and sealed Ultra Heroes one after another.

Its body covered in strong armor, it has combat strength far above the Ultra Heroes, which Cosmos and even Zero could not defeat. It can shoot powerful destructive beams from its body, and inflicts pain on its enemies by using Etel Image to make the enemies’ most feared beings appear in an illusional space, as well as materializing them with Etel Dummy.