— Goh Hamazaki
"Protect the Tojo Clan. It's the only proof that we walked on this earth."
Goh Hamazaki (浜崎 豪, Hamazaki Gō) is the leader of the Hamazaki Family. By 2009, Hamazaki had become one of the three top lieutenants of the Tojo Clan, along with Yoshitaka Mine and Tsuyoshi Kanda. He has earned the nickname "Emperor of Hama" (ハマの帝王, Hama no Teiō); "Hama" being short for Yokohama, the family's hometown. He is a supporting antagonist in Yakuza 3. In Yakuza 4, he becomes a supporting protagonist, allying himself with Taiga Saejima when he stages a prison escape and chooses to allow Saejima to escape with him.
Hamazaki wears a gold medallion necklace in Yakuza 3 along with his suit. He appears to have a heavy build, similar to Saejima. His hair is shaven in Yakuza 4 and he wears the typical grey prison clothes.
During Yakuza 3, Hamazaki was portrayed to be very cruel and sadistic. During his introduction, he bombs a Chinese restaurant and was implied to have planned the assassination of Osamu Kashiwagi. Hamazaki is also cunning and has a strong connection with the Chinese Triad, which causes his relatively small family to be feared. However, this eventually backfires as the Triads betrayed him after Lau Ka Long's death, causing him to lose everything. In the ending of Yakuza 3, he blames Kiryu for his misfortune and stabs him. He even reacts with scorn to Kiryu's speech about redemption but is surprised when the latter still believes in it, even in the face of death.
However, during the events of Yakuza 4, he begins to have a change of heart after meeting Taiga Saejima. Being the second person to ever trust him, Hamazaki, who planned to only use him as a tool to escape, comes around to respect him after Saejima calls him a brother. He even sacrifices himself so that Saejima can escape. During his reunion with Kiryu, he also showed more respect to him and became a lot more honest and kind-hearted than the last time they met.
Even with only 10 members in his family, Hamazaki rose to the top ranks of the Tojo Clan after taking over Yokohama from the Japanese branch of the Snake Flower Triad four years prior. It is shown that Hamazaki was secretly working with the Snake Flower Triad leader Lau Ka Long in order to accomplish this.
Interested in the land resort deal, he works with the Land Minister Suzuki in order to remove the orphanage. With the land in his possession, he plans to create a secret casino for the Triad group.
To stop Kiryu from interfering with his plans to take over the Tojo Clan and claim the Okinawa resort land in his possession, he blackmails Majima to use his family to stop him. When that doesn't go to plan, he convinces his partner Lau Ka Long and his Triad to invade Kamurocho, though Lau is more than obliged out of revenge against Kiryu. After Lau Ka Long is killed, the Snake Flower Triad HQ in China destroys Hamazaki's Family for allowing their Japanese branch leader to be killed, forcing him into hiding.
In the game's ending, he appears again in Theater Square confronting Kiryu. Devoid of the power he once had as a yakuza patriarch, Hamazaki tells Kiryu that he is a wanted man and that he would be better off dead than to live in personal shame. Kiryu convinces Hamazaki that it's not too late to mend his ways as long as he is alive, stretching his hand out as a sign of trust. Hamazaki walks towards Kiryu, stabbing him in his abdomen with a knife. With Kiryu dying, Hamazaki mockingly states to Kazuma that his idealism will not amount to anything now that he's near death, and Kiryu responds that he still believes in people and his ideals even if he's dying, as the now-deceased Mine taught him this lesson. Bemused by Kiryu's resolve, he is tackled by Kazuki and Yuya, and pinned to the ground as police sirens wail in the background.
After his arrest, Hamazaki was sent to the same facility Taiga Saejima is transferred to. After Saejima is beaten, Hamazaki manages to see him and convinces him to help with his escape effort. With weapon expert Kamiyama's help, who was also an inmate at the prison, the two manage to get past the guards. While sneaking out, Hamazaki obtains confidential documents pertaining to the Tojo Clan. After a final showdown with prison guard Saito, Hamazaki is shot multiple times. Before he and Saito fall into the sea, he tells Saejima to find a man named Kiryu.
Hamazaki washes up on Morning Glory Orphanage's beach in Okinawa sometime later. Haruka, remembering the events of the previous year, refuses to let him near the other children. Throughout Hamazaki's stay, she continues to hold a grudge against him, which Kiryu attempts to resolve.
Kiryu and Hamazaki went into town only to meet up with Yasuko, Saejima's half-sister. The group meets at Tamashiro's abandoned office, but are ambushed by Saito and the other guards. Saito is defeated, but more police begin to arrive, so Kiryu and Yasuko flee while Hamazaki stays behind. Once the two leave, however, Hamazaki succumbs to the gunshot wounds he suffered during his escape from prison. He is rushed to the hospital, with Haruka by his side. After asking Haruka to tell Kiryu to save the Tojo Clan, as it was "the only proof that guys like us existed", he dies. His body was sent to the orphanage, where it received a proper burial from Kiryu.