pretender:
(plural: ‘pretenders‘; for the right pronunciation, please click here)

two pretenders
a person who behaves in a way that is not true; a person who acts differently so as to hide his/her real feelings or intentions;
a phoney; an imposter; a hypocrite; a fraud;
a person who tries to ask for something that actually does not belong to him/her or for something that he/she has no lawful right, e.g. a person who is not actually a prince or princess but claiming to be made a king or queen or a person who is not actually qualified for post but shows false evidence and claims to be made an officer,
e.g.
The police arrested a pretender pretending to be a tax collector and collecting hundreds of dollars from the public.
The wise minister proved that the pretender to the throne was a fake and so thrown him in the prison. (i.e. a person who claims to be the legal heir to the throne)
Most people believe that all most all the politicians are pretenders saying that they are for the welfare of the public but in actual fact they do anything for their own benefit and safety.

