The Grannan originated from the planet Granna and are classified as a Near-Human species.
The Grannan possessed unique characteristics such as skin cuffs, which enabled the retraction of fingers and toes, respiratory sacs adapted for breathing methanogen, and distinctive loose eye creases.
Grannan names followed a specific order, with the family name preceding the individual's given name.
A minor Grannan settlement existed on Polneye; however, the entire colony was eradicated during the Yevethan Purge, with Plat Mallar being the only Grannan to survive.