Characters
- Hook
- Hulk (GDWG)
- Hulk (GNG)
- Hurricane
- Husband of Kamakiri’s former mate
- Hyakkiga
- Hyena
- Hyōma
- Ichi
- Ichimasu Takigawa
- Ieyasu Tokugawa
- Igor
- Iguchi
- Ishibashi
- Ishizaru
- Itō family
- Ivan (Bozlev’s soldier)
- Ivan (Victor’s soldier)
- Ivanov (Maxim’s soldier)
- Ivanov (scout)
- Izō
- Izuna
- Jack (GDN)
- Jack (GDW)
- Jack (GNG)
- Jack (GTLW)
- Jack (SSY)
- Jack (Tsurugi’s brother)
- Jackal
- Jaguar
- Jaryūki
- Jaw
- Jennie
- Jerome
- Jerome’s and Lydia’s pups
- Jet
- Jim
- Jimmy Sano
- Jin Itagaki
- Jinemon Kurohabaki
- Jinnai
- Jirō (GDWO)
- Jirō (Kyōshirō’s pack)
- Jirō (Ōu soldier)
- Jirō Gyū
- Jirokichi
- Jirōmaru
- Jirōmaru (Hiro’s pup)
- Jirōmaru (SSY)
- Jirōta (GDA)
- Jirōta (GDWO)
- Jirōta Ishibuchi
- Jodie
- Joe
- Joe’s and Hitomi’s pups
- John
- John (SSY)
- Johnny Jackson
- Juga (GDA)
- Juga (GNG)
- Junichi (human)
- Junichi (Kyōshirō’s pack)
- Junkei Tsutsui
- Junnosuke
- Junpachi
- Junya Sawamura
- Jūshirō Motegi
- Jūzaburō
- Kabuki
- Kaede Itō
- Kagetora
- Kai Brothers
- Kai Shimoyama
- Kaibutsu
- Kaiki
- Kaiō
- Kairyū
- Kaishinmaru
- Kaito
- Kaizan (Hayate’s opponent)
- Kaizan (Matsuyama’s dog)
- Kakeru
- Kamajirō
- Kamakiri
- Kamakiri Brothers
- Kamakiri’s former mate
- Kamikaze
- Kanachoro
- Kansuke
- Kansuke Yamamoto
- Kaoru Amanai
- Kasube
- Katsutoshi
- Kawasemi
- Kazuaki Gotō
- Kazue
- Kazuhiro
- Kazuhiro Ishii
- Kazuki
- Kazuki (SSY)