Green geminate serpents have scales resembling sparkling emeralds. They are considered cowardly creatures, lurking in swamps, marshes, and deep forests usually far from civilization. Their diet consists mostly of deer and other similar-sized creatures, basically of any type they can catch.

They are seldom seen by people. A green geminate serpent that encounters a group of adventurers, or a hunting party, will throw up a gas cloud smokescreen and imitate a dragon attempting to either strike a deal to get rid of the threat with no risk to itself, or to scare off the threat. It will intersperse its smokescreen breath with its breath weapon to attempt to put the group to sleep.