Happy Horse is Charlie Duncan's toy. Charlie got Happy Horse from Bob Duncan, her dad. Every time, Charlie squeezes Happy Horse the toy would sing a song, which annoys Gabe very much. The battery slowly dies on Happy Horse. Gabe tries to destroy Happy Horse. Though, he electrocutes his RC Airplane with a power line and completely recharged the battery of Happy Horse. At the end of (Butt Dialing Duncans), Happy Horse talks to Charlie which Charlie sees and Bob hears him. It is unknown of the gender of Happy Horse. A clue is that the horse speaks like a boy.