The Green Mask
Michael Shelby
- Also known as
Appearances
- Gwandanaland Comics #990
- The Green Mask #1 — 1940-07-00
- Mystery Men Comics #13 — 1940-08-00
- Mystery Men Comics #14 — 1940-09-00
- Rex Dexter of Mars #1 — 1940-10-00
- Gwandanaland Comics #167 — 2017-04-00