Descent of Darkness
Storm Giants live to the North and West of the Northern Dwarven Forge Mountains. They have a harsh and violent existence. Often feuding among themselves, stealing property, slaves or loved ones from each other. They are known to play cruel pranks on anyone who may be so unlucky as to be caught in their path. Living with the constant threat of losing their property has caused them to guard it with a shrewd ferocity.
A grand example of this is how the Storm Giants will treat slaves. They breed them like livestock and take away their young before the mother has a chance to bond, not that half orcs are known for bonding naturally. Weekly, they slaves are gathered and redistributed to new owners and given new names. These actions help to ensure the slaves form no community, and therefore will not form a resistance.
However, recently the Storm giants lost a fair number of their slaves in a mass exodus. One half-orc slave who had escaped during a previous redistribution returned in the night and was able to usher several dozen slaves from one feuding pair of Storm Giants.