The look of Hydra soldiers are usually associated with garish green and yellow color schemes, baggy uniforms, and red goggles. The Marvel Cinematic Universe introduced the world to a more militarized inspired aesthetic. The art direction approach was to make a through line, connected look for the different Hydra soldier units much like the stormtrooper variations in the Star Wars series.
Concept art by Farzad Varahramyan
Helmet design would describe the soldiers role and functionality of their class.
Concept art by Farzad Varahramyan
A skull-like appearance in the helmet designs are an homage to their leader, Red Skull.
Concept art by Farzad Varahramyan
Final design for the Melee class Hydra soldier.
Concept art by Farzad Varahramyan
Work in progress model by David Russ
Final design for the Marine/ Ranged class Hydra soldier.
Concept art by Farzad Varahramyan
Work in progress model by Donald Anderson
Final design for the Communication class Hydra soldier.
Concept art by Farzad Varahramyan
Work in progress model by Marcellus Barnes
Final design for the Stalwart class Hydra soldier.
Concept art by Farzad Varahramyan
Early design exploration for a drone Hydra soldier.
Concept art by Farzad Varahramyan
Early designs for a Hive trooper. Taken from the comic books, this character was a Hydra soldier infected by an alien parasite that would take control of the host.
Concept art by Farzad Varahramyan