Princess Dark Cloud

A person who just wants to be left alone when on family trips. They are usually tormented by their family which leads to depression and moodiness. Their frequent state of depression makes people believe that they have a dark cloud over their head.

"What's the matter Princess Dark Cloud? Don't want to join in on the game?"
or
"Oh she won't want to come, she's being a Princess Dark Cloud today."

Princess of darkness

The princess of nightmares, shadows, and all things terrifying and unseen.

The bubbly girl was the motherfuckin princess of darkness.