File:Sardaukar alternate red-tinted armour and 'ghost' helmet concept art for Dune (2021) by Keith Christensen.jpg

Summary
Concept art of the imperial sardaukar armour for Dune (2021), by Keith Christensen. Alternate red-tinted version of the armour, and an alternate "ghost" visor helmet with cowl.

Keith's commentary: "Spooky ghost head."

Source: Keith Christensen's ArtStation.com profile - "A few of my alternate Sardaukar designs for Dune"