I am looking for the right word(s) to describe a person who lies and invents stories/scenarios to illicit sympathy in order to manipulate and further their own advancement at the cost of others. Think along the lines of a psychopathic social climber, consumed by bitterness. Highly vindictive and vengeful due to an invented notion of unrequited love. Someone who has taken a twisted private fantasy and used it to try and gain both attention and allies against their perceived rival, regardless of that person's actual innocence. Thanks in advance for any input.

I am looking for the right word(s) to describe a person who lies and invents stories/scenarios to elicit sympathy in order to manipulate and further their own advancement at the cost of others. Think along the lines of a psychopathic social climber, consumed by bitterness. Highly vindictive and vengeful due to an invented notion of unrequited love. Someone who has taken a twisted private fantasy and used it to try and gain both attention and allies against their perceived rival, regardless of that person's actual innocence. Thanks in advance for any input.