CHE: What were your instructions from director Shinji Mikami?
IY: To watch many zombie movies. There were more than ten films piled up in the sound room!
CHE: Do you remember which zombie movies you watched?
IY: Versus, Night of the Zombies (Battalion of the Living Dead), Dead & Buried ... and many other zombie movies that were around at that time.
CHE: Do you remember which staff members you used for the zombie voices? And did you use your own voice?
IY: The zombie noises were the voices of our development team, in the sound room. Mr Mikami is actually Mr. Parook on the first floor. I decided which voices would go with which rooms, but do not remember details and did not use my own voice.
CHE: Mr Parook?
IY: I'm sorry, it was a nickname. It is the one that appears in the cut-scene looking back on the first floor. 'Parook' is a brand name for fluorescent tubes manufactured by Panasonic (Matsushita Electric Industrial). The zombie that appears on the first floor and turns around is like a light bulb, that is where the nickname originates.