20世紀少年
A manga by [[Urasawa Naoki]], running from 1999 to 2006. Japanese name 「20世紀少年」, though the English title is displayed more prominently on cover art (due to it being a reference to an English rock song).

Main characters include:

* [[Endou Kenji]]
* [[Ochiai Chouji]] (Occho, Shougun)
* [[Setoguchi Yukiji]]
* [[Yoshitsune (20th century boys)|]] (Minamoto)
* [[Maruo (20th century boys)|]]
* [[Shimon Masaaki]] (Mon-chan)
* [[Endou Kanna]]
* [[Kaminaga Kyuutarou]] (Kami-sama)
* [[Koizumi Kyouko]]

Other protagonists:

* [[Chouno Shouhei]]
* Kakuta
* Harunamio
* Nitani
* Luciano
* Keroyon
* Konno Yuuichi
* Kido Saburou
* Ichihara Setsuko
* Chaipon
* Ougyouhou
* Ujiko Ujio

Related to the Friendship Party:

* [[Tomodachi (20th century boys)|]]
* [spoiler][[Fukubei]][/spoiler]
* Manjoume Inshuu
* [spoiler][[Sada Kiyoshi]] (Sadakiyo)[/spoiler]
* Yamane
* Endou Kiriko
* Tamura Masao (#13)
* [[yanbou_(20th_century_boys)|Yanbou]] and [[maabou_(20th_century_boys)|Maabou]]
* Takasu Mitsuyo
* Shikishima
* Shikishima's daughter
* Unnamed general of Kantou [spoiler]and, earlier, murderer of Kiriko's fiancé[/spoiler]
* The policeman with a mole
* Yamazaki
* [[Tadonobu Katsumata]]

Minor characters:

* [b]Erica[/b]
* Igarashi Chousuke (Chou-san)
20th century boys