Board Thread:Episode Discussion/@comment-14138255-20161225162718/@comment-27082610-20161230010724

That tail is just an anatomical anomaly. It's an invertebrate limb somehow attatched to a vertebrate body that is somehow able to fully function, has an exoskeloton rigid enough to deflect sniper rounds without flinching, and yet somehow has the elasticity and flexibility to be completely prehensile and stretch multiple times the lenght of Tyrian's body.