Blackheart Rogues, or Blackhearts, are fierce and hostile. Many of their members are either kittypets wanting a dramatic change in their lives or loners who are sick of living alone.
When angry, Blackhearts will attack or annoy their main source of anger according to their status.
Blackhearts are happy when they have accomplished their goals.
The Blackheart Rogues own the marshy area behind Fire Kingdom's territory. Near the marshes is an old Twoleg nest that is used for dens.