History of character is unknown.
- 3 Appearances of Grumb (The Brave and the Bold)
- 1 Images featuring Grumb (The Brave and the Bold)
- Quotations by or about Grumb (The Brave and the Bold)
- Character Gallery: Grumb (The Brave and the Bold)
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|Green Lantern Corps member|
This character is or was a member of the Green Lantern Corps, chosen by the Guardians of the Universe to act as their sector's Green Lantern and to protect it from interstellar threats with a Power Ring.
This template will categorize articles that include it into the "Green Lantern Corps members category."