Jin Goda (郷田 仁, Gōda Jin)
- Voiced by: Masuo Amada (Japanese)
Jin Goda is the elderly 5th chairman of the Omi Alliance, and adoptive father of Ryuji Goda. However, he has difficulty controlling the organization since it has become too big for him to handle. He is kidnapped by Ryuji in a coup d'état, along with Daigo Dojima, after Kazuma Kiryu attempts to create a peace deal between the Tojo and the Omi. In the final chapter of the game, Jin explains the truth about Ryuji's original family. He took Ryuji in at the request of his real mother Suyeon, wife of the Jingweon boss, and mother of Kaoru Sayama. In the end, he is shot and killed by Ryo Takashima.
Yukio Terada (寺田 行雄, Terada Yukio)
- Voiced by: Kenji Nomura (Japanese)
Yukio is the 5th Chairman of the Tojo Clan, succeeding Kazuma Kiryu. Prior to this he was a friend of Shintaro Kazama, before his death, and a member of the Kansai-based Omi Alliance. His assassination in December 2006 started a war between the Tojo Clan and the Omi Alliance, his last wish being peace between the two organizations. In the final chapter of the game, it is revealed that he is a Korean whose real name is Daejin Kim, a survivor of the Jingweon massacre 20 years ago, and that he faked his death in order to start a war between the Tojo and Omi. He did this in order to avenge the murders of the Jingweon members. He also conspired with Ryo Takashima, but is betrayed by him. After Takashima shoots Kaoru and Jin Goda, he reveals that he doesn't need Terada anymore and shoots him. Terada tells Takashima that he never really trusted him, and that he'll never let him get what he wants. His last words to Kiyru are "Trust me:. He then activates the bomb, but the bomb's fuse falls from Terada's body, revealing that he had no intention of detonating it. In the epilogue Haruka can be seen praying at his grave, saying, "Thank you for everything."
Ryuji Goda (郷田 龍司, Gōda Ryūji)
- Voiced by: Masami Iwasaki (Japanese)
Ryuji is the adopted son of Jin Goda, second chairman of the Go-Ryu, and is known as the "Dragon of Kansai". He dislikes this nickname, because he believes that there should only be one true dragon in Japan; to this end he seeks to defeat Kiryu Kazuma. Ryuji stages a coup while Kiryu is in Osaka attempting to broker a peace deal, and kidnaps Jin and Daigo, wanting to start a war between the Tojo Clan and Omi Alliance. It is later revealed that Ryuji is the son of the Jingweon boss and his wife Suyeon, and that Kaoru is his half-sister. Due to the massacre of the Jingweon 25 years before by the Tojo Clan, Ryuji wants to destroy the town and the Tojo. To do this he works with the Jingweon, though later states he hated doing so. At the end of the game, the two fight on the top of Kamurocho Hills. After his defeat, and the killing of Jin and Terada, he gets up and charges Takashima with a gun. Ryuji is shot multiple times before finally shooting Takashima in the head. He end he and Kiryu then have a final showdown, explaining to the protesting Sayama that both he and Kiryu are going to die anyway (either by succumbing to their wounds or the bomb exploding), which ends with a scene in homage to the "Cross Counter" technique of Ashita no Joe ("Tomorrow Joe"). He then dies in Kaoru's arms.
In the zombie spinoff Yakuza: Dead Souls, which follows an alternate story, Ryuji has been expelled from the Omi after losing his fight with Kiryu, and drifts around before making his name at a takoyaki shop. He was set to succeed the owner, before he returned to Kamurocho during the zombie outbreak.
Ryo Takashima (高島 遼, Takashima Ryō)
- Voiced by: Hiroshi Tachi (Japanese)
Ryo Takashima is the Chief Director of the Omi Alliance. He took over when Yukio Terada had left the organization to become fifth chairman of the Tojo Clan, though he was actually working as Terada's mole in the alliance. Takashima, however, betrays him, intending to take both the Omi and the Jingweon to spread throughout mainland Asia. However, he is killed by Ryuji Goda before his plans can be realized.
Toranosuke Sengoku (千石 虎之介, Sengoku Toranosuke)
- Voiced by: Tadahisa Saizen (Japanese)
A flashy and brash lieutenant of the Omi Alliance, one of the Omi's "Four Kings". He sends men into Kamurocho to destroy the Tojo Clan, but they are all defeated single-handedly by Goro Majima. He then kidnaps Haruka to lure Kiryu to him. After Kiryu defeats him, he is killed by Ryuji Goda who is disgusted that he put a child in danger for a shot at killing Kiryu. He is arrogant and incredibly wealthy, owning a castle in Osaka which can split in two, revealing a second castle made of gold filled with samurai and ninjas. Also inside are two tigers, which he uses in attempt to kill Kiryu (in reference to his given name; the first character, "Tora", means "tiger").
Hiroshi Hayashi (林 弘, Hayashi Hiroshi)
- Voiced by: Shun Sugata (Japanese)
During the events of the first game, Hiroshi Hayashi is a member of the Omi Family working for Akira Nishikiyama to kidnap Haruka Sawamura. Hayashi and his men meet Kazuma Kiryu at Mizuki's bar, Ares, on top of the Millennium Tower. Hayashi corner Kiryu and demands Haruka be handed over. Kiryu resists, defeating them.
In Yakuza 2, he has left the Omi Family and started working for Ryuji Goda and Go-Ryu Clan. Hayashi and seven men are sent to attack the transformer room that serves Kage's new surveillance point in the Millennium Tower. He is once again defeated by Kazuma Kiryu.
Kunieda (国枝) Kuneida is Toranosuke Sengoku's right-hand man. He set an ambush for Kazuma Kiryu but it failed and he was defeated.