|Satellite(s):||Calaenah, Duwnocalia, Calhnyanah|
|Mass:||2.15 Earth Masses|
The third planet in the Megachidnus System, and the first planet within the Habitable Zone. Calos is a Super Earth, but notably warmer than most known Super Earths. However, its red appearance is misleading, as it is not the result of being set on fire, as the first explorers to discover the planet once thought. Though Calos itself is one of the hottest habitable planets in the system, its three moons are each partly covered in ice.