Who Designed Kayn? Visually/Soulhunter Skin

I need 3D models of soulhunter kayn in his Darkin form. Yeah the big green glowy guy.

I know Daniel did his design mechanics wise, but who did the artwork? I looked all over the internet for pictures of the skin and while there are some, there aren't any decent ones that show all the tiny details o need for my next cosplay. TIA!!!