Samurai Warriors Edit
Hanzō is a stoic enigma who desires for his master to rule. By Ieyasu's side at Okehazama, his master desires to leave Yoshimoto and asks Hanzō to assassinate him before Nobunaga. By taking Narumi Castle and eliminating the other Imagawa generals, Hanzō's efforts leads to Ieyasu's independence. After stopping Shingen's march at Mikatagahara, Mitsuhide threatens his lord's life and Hanzō is asked to guide Ieyasu safely through Iga. They escape yetHideyoshi rules the land after avenging Nobunaga's death. Contending for the right and suspicious of the Sanada's support, Ieyasu asks Hanzō to secretly infiltrate Ueda Castle for information.
If he is spotted by the Sanada troops, Hanzō will fail his mission and will have to fight his way out. Seeing that their hand was played, Ieyasu is unable to prevent talks between the Toyotomi and Sanada. Forced to kill Hideyoshi at Osaka, Hanzō heads alone to finish the job. As he reaches the top, he is trapped betweenYukimura and Hideyoshi. Cutting the family line short with Hideyoshi's death, Hanzō continues working for his master's rule.
Should the shinobi succeed his mission at Ueda, he steals the secret scroll between the Toyotomi-Sanada coalition before Yukimura can stop him. Placing their rivals at a disadvantage, their scheme is foiled and the attack is called off. Time passes and Hideyoshi dies of illness. His successor, Hideyori, and Yukimura continue to defy the Tokugawa reign at Osaka Castle. Infiltrating Sandamaru and routing the Toyotomi generals, Hanzō continues the chase for Hideyori's head inside the castle. After slaying Hideyori's doubles, Kunoichi, and several other Toyotomi loyalists, he meets Yukimura in the main keep. Yukimura informs him that Hideyori has already committed suicide yet he refuses to lay down his arms. To end the "last samurai" of the age, Hanzō kills him in combat. With his role in the turbulent age finished, Hanzō disappears.
Hanzō is described as the leader of the Iga ninja in Samurai Warriors 2. Called "Devil Hanzō", he aids his lord at Anegawa by attacking the Asakura main camp from the back road. As they returned home, they learned of Shingen's march towards the capital that endangered Mikawa. Though Ieyasu tried to drive the conqueror back, he is outmaneuvered at Mikatagahara and asked by his vassals to run for his life. During the escape, Hanzō can use the ninja path to defeat Masatoyo Naitō in the south. Following Mikatagahara, he assists the end of the Takeda by helping his lord at Nagashino. Power shifts into Hideyoshi's hands after he avenges Nobunaga years later.
During the shinobi's version of Komaki-Nagakute, Ieyasu is surrounded at the ally rampart by an enemy ambush and Nene appears to endanger Nobukatsu Oda at Kiyosu Castle. Hanzō can take the ninja path to quickly save his lord as no defensive generals appear to guard the gates. Although defeated, Hideyoshi uses his diplomatic skills to convince many of Ieyasu's allies to join him. Determined to take power by force, Ieyasu allies with the Hōjō and has Hanzō infiltrate Osaka Castle. Though technically on the same side for siege,Kotarō's only interest is to compete his skills against Hanzō. As he enters the main keep, Kotarō defects to fight both Nene and Hanzō at once. After defeating the ninja, Hanzō takes Hideyoshi's life for Ieyasu.
In his dream mode, Hanzō participates in the first siege of Ueda Castle. Unlike the normal version of the stage, he spots the spy unit early and can prevent the water attack from happening. Kotarō threatens Ieyasu's safety with his doubles so Hanzō is given the task of hunting him down.
In Samurai Warriors: Katana, Hanzō first appears during the Swordsman scenario as an assassin sent to kill Hideyori inside Ōsaka Castle. He is forced to abandon his mission when the protagonist defeats him in battle. The ninja becomes a persistent adversary in the Stealth scenario after the Fūma clan arbitrarily invade Mikawa. Hanzō's failure to impede the player with poison gas forces him to take a more direct approach; their duel results in the shinobi's death.
Samurai Warriors 3 has him start by saving his master at Iga and being assisted in his covert operations by Nene. He additionally rescues Nene from Kotarō and opens the path for his lord by defeating Motochika. Unwilling to let his prey escape, Kotarō and his doubles appear a second time on the field. After they escape, tensions between Hideyoshi and Ieyasu eventually rise at Komaki-Nagakute. Hanzō is asked during the battle to open the path forward from his position in the east and rout Kiyomasa. As Nene appears to threaten Ieyasu's march, she notes that suddenly being enemies with him is a sad state of affairs, even though they are both working to see a beautiful world of peace. Hanzō dismisses her claims for valuing anything beyond her duty, but she promises that he'll one day see the truth behind her words. Winning the conflict, Ieyasu agrees to realize his vision together with Hideyoshi.
After breaking through the Sanada's defenses at Ueda Castle with his abilities, Hideyoshi orders the siege of Odawara Castle. Once again allies, he saves Nene from Kotarō during her failed night infiltration. While on the field of battle, Hanzō sneaks into the eastern path and opens the gates for the army. Kotarō challenges their invasion with his doubles and Hanzō is given the task of stopping them. Nene cheers him on so that the end of the wars can be realized. After Hideyoshi dies of illness, however, Ieyasu rises to power and establishes his shogunate. The remaining Toyotomi loyalists gather at Osaka Castle with Nene acting as the figure leader of the conflict. Ieyasu, regretfully knowing that she will fight for Hideyoshi's vision until her end, states that she needs to be dealt with for the new era of peace. Seeing her precious "children" fall to the Tokugawa army, a dispirited Nene faces Hanzō to join them and her husband. Playing a flute to calm her last moments, Hanzō lives his days in the peace that Nene had wanted him to see.
Ieyasu's story route in Sengoku Musou 3: Empires has Hanzō aid his lord's renewed ambition by gathering information to neutralize the Toyotomi loyalists. He also thwarts Sakon's assassination attempt on Ieyasu and is later present in the scenario's ending where the Tokugawa set off fireworks to celebrate their new reign.
Hanzō continues to serve Ieyasu in Samurai Warriors 4, swearing with Tadakatsu to always support their lord through any adversity. He assists the Tokugawa forces at Okehazama, Kakegawa Castle, Tōtōmi, Anegawa, Mikatagahara, Nagashino, Komaki-Nagakute, and Ueda Castle. During these battles, Hanzō tries to hide his failing health and fools everyone except for Munenori. His experiences with the Takeda forces taught him that Yukimura is a valid threat to Ieyasu's future success. In spite of his lord's order to spare the youth, Hanzō prefers for his death. Therefore, he privately seeks to assassinate Yukimura during his exile in Kudoyama. When Hanzō is mere striking distance of his unsuspecting target, the shinobi suddenly succumbs to his mortal illness and perishes unnoticed.
The 4-II Clash of Wills story has Hanzō act as the interpreter for Naomasa and Tadakatsu's exchanges to a baffled Ina. He remarks that their banter shouldn't raise cause for concern. He assists Takatora in the first downloadable scenario and Kotarō in the third. Hanzō personally seeks to free Ieyasu and Tadakatsu from the spell's control during the latter. As he chases his lord to restore him to his senses, Hanzō is clearly surprised by Ieyasu's unexpected swiftness. Hanzō acts like a dog when he is placed under the same spell after the battle.