Toshiro Kago is a character the player encounters during the Mothership Zeta DLC. Toshiro is of Japanese origin and was abducted by the Aliens. He was originally a Samurai before his abduction meaning that he may be over 1000 years old. He is equipped with Samurai Armor, a Samurai Helmet and a Samurai's Sword.
Throughout the Mothership Zeta DLC, Toshiro speaks Japanese, much to the players dismay. The player cannot understand him and the game's subtitles do not translate his dialouge.
Hiw first line, "oushi wa nanimono? koko wa dokoda?" can be translated into, "Who are you? What is this place?"
During the first part of the DLC, the player can find Toshiro wandering around the Engineering Core. After you destroy 1-2 Generators as part of the Among the Stars quest, he will disappear, apparently leaving to search the ship for his lost sword. When the player enters the living quarters near the end of the game, Toshiro is hidden in a small room blocked by a shield. If the player destroys the shield, they can find him surrounded by dead bodies.
At the finale of the Mothership Zeta DLC, Toshiro will appear during the fight with the other Alien ship and will help you defeat the many Aliens that enter the Bridge. He may or may not leave the ship at the conclusion of the quest. If he stays, he will wander the Bridge where the player can find Sally if you return.
The only way for the player to gain Toshiros equipment is to kill him, or allow him to die in combat. There is no karma loss for killing him yourself.