The Kalderans (Second Human Empire: Vuyi'jui Ruyi'opkk) were a member race of the Systems Commonwealth before the Long Night. At least one Kalderan was on board the Andromeda Ascendant and survived its assault by the Nietzscheans but died of old age. Their home planet is named, Kalderash which is the capital of the Kalderan Alliance. Kalderans are robust bipeds with an average height slightly taller than that of a human, but significantly lighter weight due to a hollow bone structure. Though descended from flightless, featherless avians, Kalderans have a more reptilian appearance, with elongated heads and fragile, photosensitive eyes that are often shielded using glasses or goggles. The Kalderans joined the Alliance of Nations.

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