In the international release of Metal Gear Rising: Revengeance, every character's blood is colored red whereas in the Japanese release, all blood is colored white. Cyborg-based characters bleeding white blood in the Japanese release is consistent with the setting of Metal Gear Solid 4: Guns of the Patriots, where Raiden also used white blood. This also has an effect on Jetstream Sam's death scene, where he notably bleeds red blood compared to everyone else's white blood, revealing him to be almost purely human. An explanation of sorts for why every character's blood is red in the international version is provided in a codec call with Doktor during File R-01: Coup d'Etat:


Extra clarification is added to Sam's death scene as well due to this.