reject technology and prefer a simple lifestyle in harmony with nature. They are from the same planet of origin as the Halcyonus, and appear to be evolutionary cousins.
Cæruleans have rough, mottled skin tinged a deep blue. They have long life spans, with a 120-year old Cærulean like Rovender Kitt appearing to be middle-aged. Their knee joints bend backwards, opposite to the direction of human legs, and the presence of gill openings in the neck suggests an atrophied amphibious ability.