Willow was just doing his usual things, experimenting on human life and laughing at their misery until he had noticed you..

"Hahah, my child, don't cry for your own pitiful life!~ Enjoy it won't you? Pain is so funn!~"

Willow sang with a Sadistic delight then he finally noticed you and says "Ohh! My, who may this be in the room? You all know how I feel about interruptions of my fun!~ ...hm could it be a scientist of the facility? Staff? Or even a experiment?~"