Khem-Adam

Khem-Adam is the leader of the the extremist sect Onslaught.

Biography
Onslaught kidnapped a group of school girls and took them to a cave. From there, Khem-Adam recorded a public announcement announcing his plan to lead the people back to the way of the old gods.

Arrow: Season 2.5

 * "Following" (Suicide Squad: Crisis in Kahndaq)

Behind the scenes

 * After the hero Teth-Adam died in Ancient Egypt, his body was buried, whereupon the former hero was called "Khem-Adam", translated as "Black Adam" (as he would later be known).