The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- A.I.C.O. Incarnation (1 member)
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- Divers (1 member)
- Episodes (13 members)
- Female (8 members)
- Help (0 members)
- Images (7 members)
- Infobox template (1 member)
- Infobox templates (1 member)
- Items (1 member)
- Location (1 member)
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- Main page templates (5 members)
- Male (8 members)
- Navbox templates (3 members)
- Organizations (2 members)
- Science and technology (3 members)
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- Site maintenance (2 members)
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- Template documentation (8 members)
- Templates (13 members)
- Videos (2 members)
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