Riddick has enough of a good memory, then, that he might be able to recognize some of the voices.

"-rules violation-" A calm, but stern, androgynous voice begins.
"-outside parameters-" The Emperor answers, a tinge of concern in his otherwise authoritative tone.
"-showing our hand-" A raspy male voice interrupts.
"-altering the channels of power now might-" Death argues, his voice almost pleading.

"... I altered the channels of power, as I had set out to do. And it cost me a great deal of personal power to do so. So yes, Angels, Matthew, Riddick - I am weakened. This victory has given some power back, but not all."