The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
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- Actors/Actresses (1 member)
- Article management templates (2 members)
- Article stubs (12 members)
- Articles Needing Maintenance (2 members)
- Blog posts (4 members)
- Books (1 member)
- Browse (4 members)
- CC-BY files (1 member)
- Candidates for deletion (0 members)
- Candidates for speedy deletion (0 members)
- Category templates (10 members)
- Character Templates (2 members)
- Characters (30 members)
- Characters From The PS1 Game (7 members)
- Citations needed (0 members)
- Commando Elite (22 members)
- Community (5 members)
- Companies (2 members)
- Content (3 members)
- Controllable PS1 Game Characters (2 members)
- Copyright (1 member)
- Deceased Characters (10 members)
- Disambiguations (1 member)
- Female (16 members)
- Females (14 members)
- Forums (6 members)
- Games (3 members)
- General wiki templates (33 members)
- Gorgonites (26 members)
- Heartland Playsystems (2 members)
- Heartland Systems (0 members)
- Help (6 members)
- Help desk (2 members)
- Heroes (19 members)
- Hidden categories (1 member)
- Homeworlds (1 member)
- Humans (19 members)
- Image wiki templates (9 members)
- Images (10 members)
- Incomplete Articles (17 members)
- Infobox templates (9 members)
- Items (1 member)
- Levels in the PS1 Game (6 members)
- Locations (2 members)
- Main Articles (2 members)
- Main Page Templates (2 members)
- Male (0 members)
- Male Characters (15 members)
- Males (5 members)