I had the opportunity to work as a Lead character artist at Elite3d for Call of Duty: Infinite Warfare.
Most of the elements where done by Seth Nash at Infinity War. https://www.artstation.com/artwork/drnzK from an Aaron Beck concept
I just help them to make a variation of the Phatom character.
Boots, Ruben Signes https://www.artstation.com/artist/rubensignes