Baron Blitzkrieg (Earth-2: Post-Crisis)

"What if she's, like, a spy or something? A spy? Yeah, for one of the JSA's old enemies, like, Baron Von Blitzkrieg. Okay. There's no "Von", all right? It's just Baron Blitzkrieg. And he died in the war."

- Courtney Whitmore and Pat Dugan

Baron Blitzkrieg was a criminal and a member of the Injustice Society of America.

Injustice Society of America
During World War II, Baron Blitzkrieg became a member of the Injustice Society of America and an enemy of the Justice Society of America. He later died of unknown causes during the war.