noun (n)

• a claimant to the throne or to the office of ruler (usually without just title)(noun.person)

  source: wordnet30
• a person who makes deceitful pretenses(noun.person)

  Synonym:
  fake, faker, fraud, imposter, impostor, pseud, pseudo, role player, sham, shammer
  

  source: wordnet30
• a person who professes beliefs and opinions that he or she does not hold in order to conceal his or her real feelings or motives(noun.person)

  Synonym:
  dissembler, dissimulator, hypocrite, phoney, phony
  

  source: wordnet30
• One who lays claim, or asserts a title (to something); a claimant.(noun)

  source: webster1913