A capricious little guy, hooves tapping along in a little jig to the faint sound of pipes or a jaunty whistle in his wake.

Description:

Five foot two, eyes of blue
woodja, couldya, yes you'll do

other than that...
WYSIWYG

I don't claim any 'powers' for this character but if you want to say his song or the sound of his pipes captivates yours and makes them do what he suggests they do  I'll play along ;)

He can play a happy tune or make beautiful music together, as you choose and that bulge in his shorts isn't his spare socks, since he doesn't wear any.