Update

 Here are the finalised designs for the two races. The savage are now called Raakthu, and the passive are now called the Vak'arshi. I put them next to each other to show the size difference.

 These are the Raakthu, the adult and the infant.

These are the Vak'arshi, male and female versions.

I will go into the particulars of the design on the character turnarounds.