Lord Harunobu Adachi was head of Clan Adachi, Masako's husband and said to be the best swordsman on Tsushima. He is the samurai who steps out to challenge Khotun Khan at Komoda Beach in the opening.
He fell for Masako after seeing her fight off bandits. He banished the servant Mai rather than have her flogged. He was a close friend of Lord Shimura and went to Kazumasa Sakai's funeral.
He demands a duel with the Khan's best warrior. Khotun sets him on fire and beheads him, provoking the samurai charge. Masako and Jin later bury him and his sons beside Komoda Lighthouse.
Image: Sucker Punch Productions / PlayStationJin Sakai
Jin Sakai is the samurai you play in Ghost of Tsushima and the Iki Island expansion. He is Lord Shimura's nephew and the last lord of Clan Sakai. After the Mongol landing he trades the samurai code for stealth and fear, and the people start calling him the Ghost.
Image: Sucker Punch Productions / PlayStationKhotun Khan
Khotun Khan is the Mongol general who leads the invasion of Tsushima and the main villain of Ghost of Tsushima. He studied Japanese language and customs before landing, and he uses the samurai code against the island's defenders. You chase him from Komoda Beach to the north of the island.
Image: Sucker Punch Productions / PlayStationLord Shimura
Lord Shimura is the jito of Tsushima, the shogun's appointed ruler of the island, and Jin's uncle. He raised Jin as a samurai after Jin's father died. He leads the defence at Komoda Beach and is the man you spend Act 1 trying to rescue. He also has his own Tale of Lord Shimura in the main story.
Yuna
Yuna is a thief from Yarikawa and Jin's closest ally in Ghost of Tsushima. She pulls him off Komoda Beach, teaches him to fight from the shadows and coins the name Ghost. She also has her own four-part storyline, Yuna's Tales, about the slavers who stole her childhood.