I know cameron, allow me to try and put down what's in my head.
Siax's official race is hard to put down because to make him he was genetically spliced with multiple dna strands of creatures and beings that have high resistance to the force. he was the sixth one made in the project but was also the smallest one. the others in the project were hulking abominations. every so often his creators would pit him against his "brothers." in battles to the death. siax killed them and became the sole survivor of project morningstar and received biological enhancement via killing the old body and enhancing his clone while it was being made. the clone retained the past body's memories and how it was killed so it would be able to counter it when it was reborn. every time the body was killed it was killed a new way so that when it was cloned it would have knowledge on how to counter the thing that killed him.
under the suit, his eyes are near pure black with a red reptilian slit pupils. his skin is pale Forrest green. his hands have only three digits for fingers. his feet have four elongated digits one on each side of each foot.
any other questions?