The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 4D Science: Chapter 1 Images (2 members)
- 4D Science: Chapter 3 Images (2 members)
- 4D Science Chapters (3 members)
- Acquired Items (9 members)
- Acquired Items Images (571 members)
- Age of Exploration Arc Chapters (18 members)
- Age of Exploration Arc Episodes (5 members)
- Akashi Images (3 members)
- Alabaster Images (7 members)
- Alumi Images (21 members)
- Amaryllis Images (25 members)
- American Characters (14 members)
- American Colony (10 members)
- Anime (7 members)
- Antagonists (16 members)
- Appearance arc templates (14 members)
- Appearance character templates (83 members)
- Appearance templates (6 members)
- Appearance text templates (6 members)
- Argo Images (13 members)
- Article Stub (10 members)
- Article management templates (5 members)
- Astronauts (7 members)
- Authors Comments (59 members)
- Azura Images (5 members)
- BD&DVD Covers (7 members)
- Badge Images (32 members)
- Battle Craft Assets (66 members)
- Beryl Images (8 members)
- Blog posts (22 members)
- Bonus Information (21 members)
- Brody Dudley Images (24 members)
- Byakuya Ishigami Images (40 members)
- CD Cover Images (19 members)
- Candidates for deletion (0 members)
- Carbo Images (13 members)
- Carlos Barrios Images (29 members)
- Chalk Images (11 members)
- Chapter 100 Images (3 members)
- Chapter 101 Images (4 members)
- Chapter 102 Images (4 members)
- Chapter 103 Images (4 members)
- Chapter 104 Images (9 members)
- Chapter 105 Images (8 members)
- Chapter 106 Images (4 members)
- Chapter 107 Images (5 members)
- Chapter 108 Images (6 members)
- Chapter 109 Images (4 members)
- Chapter 10 Images (2 members)
- Chapter 110 Images (10 members)