The Viska were a race of ruthless beings native to the planet Rordak. The Viska were a species of flying carnivores which have two large wings, two arms, and a thick tail. They have long necks and small, triangular heads, and their mouths were circular in shape and protect the blossug, which was used to pierce the skin of their victims in order to feed. The Viska were feared throughout the galaxy because they survive by consuming the blood of their victims. They were incredibly adaptable to variations in climate. Their political system was led by a leader who was chosen in combat, when all the offspring of a deceased caleisk fight against each other until only one survives. The survivor becomes the new ruler of the Viska. Most other races in the galaxy simply refer to the Viska as the "great bloodsucking fiends of Rordak."

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