Well, I don't know who (or what) is he whispering at. I mean, look at the art. If I was as high as him, I'd sure be whispering at everything...
He is whispering to the Swamp Wisp that is just off his frame to the left. The Swamp wisp shows part of Garus horn, and garu art shows the very edge of da wisp's green energy.
