The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Anti-Heroes (2 members)
- Anti-Heroines (1 member)
- Blog posts (0 members)
- Browse (7 members)
- Candidates for deletion (0 members)
- Characters (11 members)
- Disambiguations (0 members)
- Dreamcast (2 members)
- Evil (1 member)
- Females (4 members)
- Help (0 members)
- Heroes (6 members)
- Heroines (4 members)
- Images (1 member)
- Males (7 members)
- Neutrals (3 members)
- SEGA (2 members)
- SEGA Games (2 members)
- Sega (2 members)
- Sega Games (2 members)
- Sonic Adventure Games (2 members)
- Sonic Games (2 members)
- Sonic Video Games (2 members)
- Template documentation (26 members)
- Templates (25 members)
- Videos (33 members)
- Villains (1 member)