An Aura is a luminous soul energy that surrounds a person. Auras can reveal much about an individual. Good beings possess a very strong and colorful aura, while evil or corrupted beings have a black aura. Additionally, some beings can read auras to see a person's health and emotional state.
Grimlocks possess an ability known as Aura Choking, which allows them to seek out those with good auras and suffocate them with it.