Western Astrology: Astrological Compatibility Scorpio: Scorpio is the eight sign of the zodiac. It is a fixed water sign. Scorpios are intense and secretive. They are one of the most complex signs of the zodiac, a typical characteristic of a water sign. Scorpios have the ability to see right through anything or anyone. They are penetrating and observant. This sign is ruled by Pluto in modern astrology. Pluto is the planet of domination and transformation. Scorpios have a tendency to do both with usually positive results. more about Scorpio Now please select your partner’s astrological sign: