Chimeron

The Chimeron are a race of humanoids who were nearly wiped out.

Chimerons hatch from large grey eggs and start as green, wrinkly infants. Though males keep this appearance throughout their life, the queens of the species have a slightly different development. In order to properly develop, the young queens are given a special substance from birth onwards. In the first few hours, they rapidly grow and become more Human-like, developing hair and other more distinct facial features and losing the wrinkles. Chimeron queens also develop start singing at this age, partly as communication and partly as a powerful means of defence. Once they reach the Singing Time, they perfect their defensive songs and reach closer to adult size. Adult queen chimerons look similar to Human females with slightly green skin and grey patches behind the ears for detecting higher frequencies.

The Chimerons were nearly wiped out by the Bannermen, but one of the last queens was able to escape with an egg. (DW: Delta and the Bannermen)