Omg know a few that fit this description perfectly! People may lie to get what they want or to evade responsibility, but lying is also a method of manufacturing and upholding a sense of superiority. See also: The Skilled Liar, Liars, 14 Psychopathic.
oh yeah! I know of one person in her whose name starts with an A that is a lying dickhole. Not only is she a liar but she is delusional as well. I know one that starts with an E, they must be good friends.
the toxic person. They live in a blissful world where nothing is ever their responsibility. When bad things happen, it is because the world is against them! When they are raging abuse at you, it is because YOU made them angry.