Neotropical Dragons are a breed that originate in rainforests. They are fun-loving and enjoy lounging on tree branches, eating whatever fruit they find. They are also often found sunning themselves on rocks, using their large wings to soak up the rays. In the summer, males compete for mates by showing off their striped wings and gliding in spirals down the tree trunks. It is said that the larger the wings, the more likely the male will attract a suitable mate.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

GLaDOS loves to test. Test, test, test, that's all she ever wants to do. Living on the relative outskirts of the Separator-Controlled section of the Wisdom Territories, she enjoys grabbing the stray Republicators that cross the border, and is rumored to do terrible things to her test subjects.

Autumn, after the rumors reached her, went to visit GLaDOS herself to figure out what was going wrong. She didn't come out until five months later, where Team Cydragon had assumed her dead and the Wisdom Territories had fallen into chaos.

Autumn told everyone that it was nothing, just a few tunnels and caverns. She told them that she had gotten lost, but GLaDOS had found her. What she didn't tell them was what she found when she entered what GLaDOS called the Aperture Caverns...and of what GLaDOS herself did to the strayed Republicators.