freshprinceofdespair said: Wikipedia says that the main enemies (which are mechanical) will be voiced using Vocaloid. I'm not sure how that works since I haven't played Peace Walker yet.
Yup, they used vocaloid on bosses, it's like you are killing miku Also you can use the Vocaloid software to change their voices and 'compose(?) songs'(笑). I'm not sure if this count as spoiler since I did not noticed about it after beat the game for first time (´・ω・)