Bad Blood is the phrase used for any Predator that has turned against its own kind - intentional or not. If the individual is found to have brought dishonor to his people and flees before accepting punishment, there can be no forgiveness according to Predator tradition. Other Predators are allowed to eliminate the outcasts on sight. Bad Bloods are never accepted back into Predator society. Wandering aimlessly, some Bad Bloods have been known to hunt and slay anything alive, including other Predators.
It is possible that the Black Super Predators were Bad Bloods because they were outcast Yautjas - being exiled to the game reserve, and this is also possible because they captured another Predator, who was killed by the Berserker. Bad Bloods are seen as more hostile and "mentally unstable" Predators. Bad Bloods weapons vary from normal Predator normally marked with certain insults to Predator kind. These sadistic hunters still use skills learned to them by their brothers, but have developed dishonorable fighting styles.
- Predator: Bad Blood (first appearance)
- Predator (Series 2)
- Predator: Concrete Jungle
- Aliens vs. Predator: Three World War