Whaela'an

The Whaela'an were a newly created species of macro-viruses.

History
The Whaela'an were accidentally enlarged by a Diagnosan named Cotat in an experiment to better study viruses. However the Whaela'an escaped the scientist's facilities and took off into space with plans for conquest. The Whaela'an method of conquering other worlds is mostly through subtle biological warfare.

Using their statuses as sentient viruses they use their smaller cousins to infect the translator microbes, a substance found within nearly every space-faring sentient race in the galaxy, as their medium of infection. The smaller viruses then begun to cause the brains of the subjects to experience rage and belligerence, causing mass hysteria on multiple worlds. Once the madness subsided through the eventually suicidal deaths of the infected the Whaela'ans would take over.

Cotat managed to create an anti-virus to act as a cure for the Whaela'an plague. It was tested on John Crichton and was eventually spread across the galaxy by the Hynerian Empire.