The English equivalent would basically be Microsoft Sam, which I considered actually replacing it with for the intro warning, but decided it wouldn't work very well for the rest of the voice clips. (I'm pretty sure it's that and not Defoko/AquesTalk.) The Mogeko voice is from the voice synthesizing program SofTalk and is also known as the Yukkuri voice. Agyagyagyagyagyagyagyagyagya! (Spoilers.)