The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
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- Adults (9 members)
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- Article management templates (4 members)
- Article stubs (1 member)
- Avengers (12 members)
- Avengers Villains (2 members)
- Black Panther Villains (1 member)
- BlogListingPage (0 members)
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- Browse (38 members)
- Candidates for deletion (1 member)
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- Cartoons (1 member)
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- Characters (77 members)
- Characters of the cancelled season 3 (3 members)
- Chinese (12 members)
- Comics (1 member)
- Community (5 members)
- Companies (4 members)
- Concepts (2 members)
- Content (1 member)
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- Countries (2 members)
- Deceased Characters (19 members)
- Disambiguations (0 members)
- Doctor Doom Enemies (3 members)
- Episodes (54 members)
- Equipment (3 members)
- Extremis Users (1 member)
- Female Characters (1 member)
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- Files (2 members)
- Fired (1 member)
- Former Villains (6 members)
- Forums (6 members)
- General wiki templates (32 members)
- Geniuses (12 members)
- Guardians (0 members)
- Help (5 members)
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- Heroes (19 members)
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- Hulk Villains (1 member)
- Image wiki templates (9 members)
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- Infobox portals (2 members)