The term outcast refers to members of the Nora Tribe that have been banished for breaking the laws of the tribe. The crimes of an outcast can range from simple ones like stealing or fighting other tribe members to breaking the taboos of the tribe, such as leaving the Sacred Land. The outcasts are then given a term for which they must be an outcast; this ranges from a few years to a life sentence.
As an outcast, the offender is banished from Mother's Heart and forbidden from returning until their sentence has expired. Along with being forced out of Mother's Heart, other tribe members are forbidden from speaking with the outcast. Outcasts are also forbidden from speaking with other outcasts. However, some outcasts and tribe members either choose to ignore the law, thus risking to break the law themselves, or find clever work-arounds, as in the case of Grata. She pretended to be saying prayers to the All-Mother, when in reality she was talking to Aloy.
Outcast children are a special case, as with Aloy, whom was motherless and therefore cast out from birth. Outcast children must follow all the rules of a normal outcast, however they have one clause that specifically applies to them. When an outcast child reaches maturity (around 18 years old), the child is allowed to join other Nora children in the Proving. If the outcast child completes the Proving, the child is no longer an outcast and is made a Brave.
- Many of the outcasts use brown and white pigments in their face paints as opposed to the traditional blue of the Nora.
- Before Aloy, there has only been one other child outcast, a thirteen-year-old boy that was cast out after killing his mother.