Concept by Troy Davis and J.K. Torres.
All production work done by J.K. Torres.
Sculpted in ZBrush, Low-poly mesh modeled in Maya. Textured in Substance Painter and Substance Designer. All maps generated in Substance Painter and xNormal.
UV layout done in 3D-Coat, Headus UV Layout and Maya.
Textures polished and finished in Photoshop.

Wireframes

Maps: Albedo, Normal, Metallic, Roughness, AO, Height, Emissive.