Real name unknown. Civilians and those outside the organization call him Gozen, while Mido's subordinates simply call him Kagemusha. A Japanese male in his 50s or 60s. He acts as Mido Kosaku's body double. While his actions seem evil, he doesn't even come close to the cruelty of the real Mido Kosaku. He has a solid build and fair skin. There are moles on the left side of his neck and under his eye, though it's unclear if they are real or drawn on. Most people (except for the organization's assassins) believe he is the real Mido.

The real Mido Kosaku, commonly known as Gozen. A Japanese male in his 70s or 80s. He is the man who pulls the strings of the Japanese underworld and political circles, possessing enough power to make even members of the National Diet tremble. His body is covered in scars, and despite his age, he has a remarkably youthful physique. He is always drinking sake or tea. He has a darker complexion and moles on the left side of his neck and under his left eye. He works from the shadows behind his Kagemusha to avoid assassination.

The son of Mido Kosaku and an assassin within Mido's private army. A Japanese male in his 30s or 40s. He is both an assassin and a top-tier driver. He resembles his father slightly, and their biological connection is unmistakable. He has a darker complexion and tends to use polite speech with everyone. He follows Gozen's (Mido Kosaku) orders faithfully. Though he finds his father terrifying at times, he performs his duties well.

An assassin in Mido's private army. A middle-aged Japanese male and Kosaku's right-hand man. He is extremely calculating and intelligent. While cold and clinical, he is fiercely loyal only to Kosaku.

An assassin in Mido's guard. He possesses high combat ability and intelligence. He has a free-spirited personality but can be cold-blooded when necessary. He was in the same training class as Toma.

An assassin in Mido's guard with high combat power. He usually keeps his eyes squinted but opens them occasionally. He has a bit of an anger management issue, yet remains cold and composed when the situation demands it. He is strong and was in the same class as Suo.

A master swordsman among Mido's guards. He always walks around with his eyes squinted and carries a funeral urn. He is a highly skilled swordsman with great combat power. While he acts sly and playful, he is cold and cruel when he turns serious.

An assassin in Mido's guard who uses a spear as his weapon. A young man with an eccentric, 4D personality. He acts like a puppy at times, but he is a high-level combatant and a complete madman in battle.

A yakuza under Mido's command. Like Nomura, he is a swordsman, but his skills are slightly lacking in comparison. However, his combat power is by no means low. He is prone to getting scared occasionally.