Black X
Richard Spencer, from Espionage [Quality]
- Also known as Black Ace,The Black X
Appearances
- Gwandanaland Comics #956
- Smash Comics #25 — 1941-08-00
- Smash Comics #27 — 1941-10-00
- Smash Comics #31 — 1942-02-00
- Smash Comics #72 — 1947-08-00
- Will Eisner: The Centennial Celebration, 1917-2017 #[nn] — 2017-03-15
- Gwandanaland Comics #211 — 2018-01-00