The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Vs. Hero Killer Arc Events (3 members)
- Vs. Queen Bee Arc Battles (7 members)
- Vs. Queen Bee Arc Chapters (17 members)
- Wash's Agency Employees (3 members)
- Water Hose Images (5 members)
- Watercooler (2 members)
- Wiki Design Images (62 members)
- Wiki Projects (1 member)
- Wiki maintenance (18 members)
- Wild, Wild Pussycats Members (4 members)
- Wild Villains (3 members)
- Willy Wanda Images (3 members)
- Wolfram Battles (2 members)
- Wolfram Images (33 members)
- Woman's Quirks (3 members)
- Woman Images (35 members)
- World (12 members)
- World Heroes' Mission Battles (11 members)
- X-Less Battles (2 members)
- X-Less Images (29 members)
- Yakuza (19 members)
- Yakuza Organizations (4 members)
- Yakuza Teams (2 members)
- Yashamaru Images (1 member)
- Yawara Chatora Battles (4 members)
- Yawara Chatora Images (77 members)
- Yo Shindo's Ultimate Moves (1 member)
- Yo Shindo Battles (3 members)
- Yo Shindo Images (83 members)
- Yoichi Shigaraki Images (49 members)
- Yokumiru Mera Images (17 members)
- Yoroi Musha's Agency Employees (4 members)
- Yoroi Musha Battles (1 member)
- Yoroi Musha Images (20 members)
- Yosetsu Awase's Ultimate Moves (1 member)
- Yosetsu Awase Battles (2 members)
- Yosetsu Awase Images (68 members)
- Yu Hojo Battles (1 member)
- Yu Hojo Images (38 members)
- Yu Images (28 members)
- Yu Takeyama's Ultimate Moves (2 members)
- Yu Takeyama Battles (8 members)
- Yu Takeyama Images (176 members)
- Yuga Aoyama's Ultimate Moves (4 members)
- Yuga Aoyama Battles (16 members)
- Yuga Aoyama Images (374 members)
- Yui Kodai Battles (4 members)
- Yui Kodai Images (80 members)
- Yuyu Haya Images (15 members)
- Zookeeper Images (4 members)