Halia

Halia is a stone.  They normally sit and gather moss, but if you set them rolling... well.  Your funeral.  They value the peace about them above everything; emotional and physical wellbeing of the people in their vicinity gives them a sense of calm.  Disturb it, and you will face the consequences they deem necessary.

 Screaming crowds?  Handled.  Black cats and weird ninja dudes?  We got this.  Giant things being giant for no damn reason and rocking the damn boat?  Hold my hat, Sam.  I have business to take care of.