Capricorn is not the kind to back down from a fight.
They will not let up until they have accomplished what they set out to do.
Although Pisces aren't usually the first people who spring to mind when you think of viciousness, they do have a shadowy side.
They are ruled by Neptune, which the planet which governs drugs, addictions, visions, and delusions.
The sign of Taurus is the most stubborn.
If things aren't to their liking, according to Schmidt, they might become aggressive or disagreeable.
Gemini is an air sign, therefore they do best when they're able to freely explore their interests in a group setting.
Because of this duality, though, they may be quite difficult to predict when it comes to what they say.
They're controlled by Mars, the planet of violence and war, so the ability of being vicious is part of their nature.
Scorpios are said to be petty people who would never let go of a grudge.
They'll never be the ones to go on and forget the past, and as Bennet points out, they're always plotting their next act of vengeance.