Scorpio is the eighth sign of the zodiac and is ruled by the planet Pluto (and originally Mars). It is a fixed water sign and is symbolized as the scorpion. Dealing with deep emotions, the Scorpio is known to be passionate, goal driven, and mysterious. Loyal and protective, the Scorpio always keeps those who matter in its heart but can tend to show aggression/disdain towards enemies. It is a sign of intensity that is good at getting things done, having trouble sitting still for too long. This sign has a tendency towards secrets/hidden knowledge and can easily understand the rules of the universe.