The voice used by BEE's Doors of Perception would be nice. You know, the blah blah blah blah bleh blah etc used by the Museum Guide.
Maybe not so stuffy sounding.
But a "Blah blah blah" dialogue wouldn't be a bad idea.
I reckon, if you can imitate the pain/death sounds well, into a roughly normal, non-annoying and vague sort of speech, it would work perfectly.