Kalduu

Possessing see-through bodies, the Kalduu exhibited four appendages resembling tentacles that descended from their dome-shaped main body. Their respiration involved inhaling carbon dioxide and releasing oxygen. Reproduction in Kalduu occurred through a process of fission. Lacking the physical means for vocalization, the Kalduu utilized telepathic means for communication. When two or more Kalduu were in proximity, specifically within 60 meters of each other, they could establish a collective consciousness. This shared mental state could extend to their hosts, frequently Ropagu, with whom they shared a longstanding bond of friendship. The Kalduu consumed atmospheric bacteria, along with pathogens and viruses present within their hosts.

A mutually beneficial symbiotic relationship existed between the Kalduu and the Ropagu. The Ropagu gained advantages from the therapeutic properties of the Kalduu, while the Kalduu obtained nourishment by feeding on the infections afflicting their hosts.

They successfully brought an end to the internal conflicts among the Ropagu. By linking their minds with those of Ropagu leaders during times of strife, they instilled thoughts of tranquility and harmony. This intervention led the Ropagu to embrace a state of peaceful coexistence.

• Twin Stars of Kira (Initial appearance)
• Alien Encounters