The Hamadryas were a near-Human race characterized by their green skin tone and facial features resembling those of apes. It appeared they did not need to blink, and they also did not have a carotid artery.
A prominent individual from this species was the holoperformer Cebann Veekan. Haydel Goravvus, a Senator representing Taris, was a hybrid, possessing both Human and Hamadryas ancestry.
Bob Vitas coined the name for this species during the What's The Story? initiative on StarWars.com.
The species derives its name from the Hamadryas baboon.
According to his Star Wars Blog, Bob Vitas originally envisioned the Hamadryas species originating from a planet he named "Papio."