The Scorpio's planet is Pluto. Pluto is the Roman god of The Underworld. Scorpios are often associated with occult, and other gothic things such as skulls, which Hades/Pluto is associated with as well.
SCORPIO FACT: I don& just listen to your words. I stare at your eyes. I notice your tone. I observe your body language. I interpret your silences. I hear what you don& say. And most importantly, I trust my intuition.