Tozai Line (Miyanosawa to Shin-Sapporo): The leader of the Sapporo City Subway. Namboku Line (Asabu to Makomanai): Deeply respects the Tozai Line and always speaks formally. Toho Line (Sakaemachi to Fukuzumi): Maintains an independent stance and thinks objectively.

Tozai Line (Yagiyama Zoological Park to Arai): The Namboku Line's twin older brother and a hardcore mood-maker. Namboku Line (Izumi-Chuo to Tomizawa): The Tozai Line's twin younger brother and a hardcore realist.

Ginza Line (Shibuya to Asakusa): A hard worker with a strong fatherly vibe. Marunouchi Line (Ikebukuro to Ogikubo): Step-brother to the Ginza Line; works desperately hard to be useful to others. Hibiya Line (Kita-Senju to Naka-Meguro): Always a jokester. Tozai Line (Nishi-Funabashi to Nakano): Never gives up, no matter what. Chiyoda Line (Ayase to Yoyogi-Uehara): Always calm and collected. Yurakucho Line (Shin-Kiba to Wakoshi): A frantic scatterbrain. Hanzomon Line (Shibuya to Oshiage): Extremely humble. Namboku Line (Meguro to Akabane-Iwabuchi): Constantly searching for new things. Fukutoshin Line (Shibuya to Wakoshi): A high-energy worker.

Asakusa Line (Oshiage to Nishi-Magome): Very friendly and well-liked. Mita Line (Meguro to Nishi-Takashimadaira): Best friends forever with the Namboku Line. Cheerful and optimistic. Oedo Line (Tochomae to Hikarigaoka): Has no sense of the seasons. Cheerful and clumsy. Shinjuku Line (Shinsen-Shinjuku to Motoyawata): Often makes design errors. A bit of a fool.

Blue Line (Shonandai to Azamino): Rival to the Green Line. Full of curiosity. Green Line (Nakayama to Hiyoshi): Rival to the Blue Line. Extremely hostile.

Higashiyama Line (Takabata to Fujigaoka): The leader of the Nagoya City Subway. Sakura-dori Line (Taikodori to Tokushige): Short-tempered and quick to anger, but a good person at heart. Tsurumai Line (Kami-Otai to Akaike): Very excitable and energetic. Meijo Line (Sakae to Sakae): A diligent and hard worker. Meiko Line (Kanayama to Nagoyako): Very boastful. Kamiiida Line (Heian-dori to Kamiiida): Enjoys being bored.

Tozai Line (Rokujizo to Uzumasa Tenjingawa): Best friends forever with the Karasuma Line. An ordinary guy. Karasuma Line (Takeda to Kokusai Kaikan): Best friends forever with the Tozai Line. A hot-blooded fellow.

Midosuji Line (Esaka to Nakamozu): The driving force behind Osaka Metro. Tanimachi Line (Dainichi to Yao-minami): Disciple of the Midosuji Line. A hard worker. Yotsubashi Line (Nishi-Umeda to Suminoe-koen): Disciple of the Midosuji Line. Acts tough. Chuo Line (Nagata to Cosmosquare): Disciple of the Midosuji Line. Quite an impressive fellow. Sennichimae Line (Noda-Hanshin to Minami-Tatsumi): Disciple of the Midosuji Line. Prone to getting depressed. Sakaisuji Line (Tenjinbashisuji 6-chome to Tengachaya): Disciple of the Midosuji Line. A hard worker. Nagahori Tsurumi-ryokuchi Line (Taisho to Kadoma-minami): Disciple of the Midosuji Line. Seeks strength. Imazatosuji Line (Itakano to Imazato): Disciple of the Midosuji Line. A weakling.

Seishin-Yamate Line (Seishin-Chuo to Shin-Kobe): Extremely introverted and gloomy. Kaigan Line (Sannomiya-Hanadokeimae to Shin-Nagata): Extremely extroverted and bright. Hokushin Line (Shin-Kobe to Tanigami): Often spacing out.

Nanakuma Line (Hashimoto to Hakata): Stubborn and impatient. Kuko Line (Meinohama to Fukuokakuko): The most sensible of the bunch. Hakozaki Line (Nakasu-Kawabata to Kaizuka): Deeply loves Fukuoka.