The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Assault Mechs (0 members)
- Auxiliary templates (3 members)
- Badlands (4 members)
- Candidates for deletion (1 member)
- Candidates for speedy deletion (0 members)
- Citation needed (0 members)
- Clans (19 members)
- Cleanup (0 members)
- Community (5 members)
- Copyright templates (12 members)
- Desert (8 members)
- Disambiguations (0 members)
- Documentation templates (3 members)
- Faction icons (13 members)
- Factions (48 members)
- Formatting templates (22 members)
- Front page sections (7 members)
- Guides (41 members)
- Heavy Mechs (0 members)
- Hidden categories (1 member)
- Highlands (5 members)
- House images (6 members)
- Houses (0 members)
- Humour (2 members)
- Icons (2 members)
- Images (8 members)
- Images needing improvement (0 members)
- Infobox templates (8 members)
- Infoboxes lacking images (19 members)
- Jungle (4 members)
- Legal notices (3 members)
- Light Mechs (0 members)
- Logos (2 members)
- Lowlands (12 members)
- Lunar (4 members)
- Main page templates (1 member)
- Martian (4 members)
- Mech icons (41 members)
- Mech images (0 members)
- Mechs (9,029 members)
- Media (2 members)
- Medium Mechs (0 members)
- Mods (1 member)
- Navigation templates (4 members)
- Notice templates (17 members)
- Pages to be merged (0 members)
- Pages to be moved (0 members)
- Pages with broken file links (560 members)
- Planets (19 members)
- Polar (4 members)