“Mask Man Green” appears to refer to the Green Mask comic character, which first came out in August 1939 in Mystery Men Comics #1. A later version of the Green Mask was reintroduced in August 1944 in The Green Mask #10.

Release timing

  • First appearance: August 1939.
  • Reintroduced version: August 1944.

Why there are two dates

The name was used for more than one version of the character, so different sources may point to different “came out” dates depending on which one you mean.

If you meant a different “Mask Man Green,” tell me the exact title or franchise and I’ll narrow it down.