On the darker side, Scorpios are one of the signs that are most prone to having malevolent behavior. Like, what did you think would happen to all of those bottled-up emotions?
When they feel hate toward someone, it is something really intense that they feel with their whole being. As I said before, they are also renowned for holding grudges for a very long time, and what is worse, they are big fans of revenge. If you did them wrong, or if they think you did them wrong, they will never forgive you without taking revenge.
So, if a Scorpio is mad at you, better run and never look back because anything this sign is capable of doing is clearly posing a real threat to you.