Anti-hero

An antihero, or antiheroine, is a protagonist who lacks conventional heroic qualities such as idealism, courage, or morality. These characters are usually considered "conspicuously contrary to an archetypal hero".

The antihero archetype can be traced back as far as Homer's Thersites. The concept has also been identified in classical Greek drama, Roman satire, and Renaissance literature such as Don Quixote and the picaresque rogue. Although antiheroes may sometimes do the "right thing", it is often because it serves their self-interest rather than being driven by moral convictions.

The term antihero was first used as early as 1714, emerging in works such as Rameau's Nephew in the 18th century, and is also used more broadly to cover Byronic heroes as well.

Literary Romanticism in the 19th century helped popularize new forms of the antihero, such as the Gothic double. The antihero eventually became an established form of social criticism, a phenomenon often associated with the unnamed protagonist in Fyodor Dostoevsky's Notes from Underground. The antihero emerged as a foil to the traditional hero archetype, a process that Northrop Frye called the fictional "centre of gravity." This movement indicated a literary change in heroic ethos from feudal aristocrat to urban democrat, as was the shift from epic to ironic narratives.

The antihero became prominent in early 20th century existentialist works such as Franz Kafka's The Metamorphosis (1915),Jean-Paul Sartre's La Nausée (1938) (French for Nausea), and Albert Camus' L'Étranger (1942) (French for The Stranger). The protagonist in these works is an indecisive central character who drifts through his life and is marked by ennui, angst, and alienation.

...
Wikipedia