- "Why do we share this relationship? Why can't one species live without the other? Well, our diets are somewhat awkward..."
- ―A Zumbyor interviewee
The Zumbyortak Empire is a civilisation that exists in the Norma Arm, which is in turn part of the Milky Way Galaxy. The Zumbyortaks are in fact a pair of species who share a symbiotic relationship. These species are the Zumbyor and Prortaks, who are both native to the planet of Iomburi. The Empire encompasses around three hundred systems, and is a buffer state of the Democratic Federation of Species in the Norma Arm.
The Zumbyor and Prortaks are not actually permenantly bound to each other physically, but each species helps the other to survive. This is because the Zumbyors can only consume meat, while the Prortaks can take only plants.
However, both require the other source of food to survive, so every month, the Zumbyor and Prortak who are living together connect themselves through a natural tube resembling an umbilical cord. Some of the nutrients are transferred from one side to the other and vice versa, in order for each to have enough nutrients to function.