Dark but hot-damn I love this effect, experimental arts will put in toolbox for sinister or skulky low light scenes, 

This is indeed phaetos on the hunt for a fresh target, when hes found something, he will hulk down and slink almost soundlessly, he also has the ability to switch off his facial lights, making him virtually impossible to detect from dark places, that teamed with his special paint that hes coated with, also makes him stealth to radar and more modern systems, camouflaging him from his "natural" prey... from being detected. 

He is also fitted with an E-M field, slowing his prey down and weakening them, he also has a pair of tazers located in his head fin roundels to further subdue them once close enough...