Unique

1. （Adjective）
   
   Being the only one of its kind.
2. （Wikipedia）
   
   Uniqueness is a state or condition wherein someone or something is unlike anything else in comparison, or is remarkable, or unusual.
   
   When used in relation to humans, it is often in relation to a person's personality, or some specific characteristics of it, signalling that it is unlike the personality traits that are prevalent in that individual's culture.