SHADOW is a mysterious organization that seeks to exterminate Japan's population using advanced technology.
They initially compete against the Hakaider Squad to kidnap Akira and gain control of the Giant Devil though after Silver, Red and Blue Hakaider are all destroyed Gill Hakaider is forced to join the organization.
Bijinder was initially a member of the organization until she turned good and joined Ichiro. The two eventually defeated SHADOW with the organization's leader dying in an explosion caused by Professor Komyoji.
SHADOW's monster robots are called Deathbots and have a more varied look compared to DARK's destructoids, ranging from animal themed to ghosts, mermaids, samurai and spacemen.