The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Wiki GUI (36 members)
- World Setting (1 member)
- XBlaze Characters (28 members)
- XBlaze Code: Embryo (277 members)
- XBlaze Games (2 members)
- XBlaze Grimoires (5 members)
- XBlaze Locations (7 members)
- XBlaze Lost: Memories (255 members)
- XIII (2 members)
- Yang Xiao Long (37 members)
- Yayoi (4 members)
- Yggdrasil Seed (0 members)
- Yggdrasill Seed (6 members)
- Yoshida, Kei (3 members)
- Yoshihara, Seiichi (2 members)
- Yoshioka, Sakaki (19 members)
- Yosuke Hanamura (59 members)
- Yu Narukami (73 members)
- Yuga (4 members)
- Yuki Hayami (0 members)
- Yuki Himezuru (49 members)
- Yukiko Amagi (36 members)
- Yumi (60 members)
- Yuuki Kato (12 members)
- Yuuki Terumi (532 members)
- Yuzuriha (27 members)
- Zara (2 members)
- Zawango (1 member)
- Zeroth Squadron (1 member)
- Zunchimo (3 members)