Outlaw

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An outlaw, also known as a loner, is a subtype of persecutor in which they have little to no contact with other system members and usually avoid the influence of gatekeepers.

Related Terms
Also described as a loner, a lone wolf is a headmate that sticks to themself.

A black sheep refers to headmates who hold the feeling of being outcast by a group of people, typically a family.

History
The term was coined on Tumblr by humorsunbalanced.