Som's Koakuma has a voice? Did I missed an update or something? The version of Som's Koa that I have doesn't have a voice at all.
Yes she does, it's activated by fiddling on her -2 State in Koakuma_05_WatchDog.st:
[State -2, VarSet]
Type = VarSet
Trigger1 = RoundState = [0,1]
Trigger2 = (var(15)=1)
var(5) = 0 ;[‰Šú’l0] <--- Setting this to 1 turns on her voice.