Something strange happened to unreliable narrators in the mid-20th century: they became a little more reliably unreliable, and a lot nastier. In the late-19th century they tended to be untrustworthy either because they were hiding something about themselves or had failed to recognise the truth, generally because of some kind of psychological weakness. However, as modernism shifted into post-modernism and we all became that much more cynical, most narrators were expected to be complicated.
Top 10 Unreliable Narrators
Top 10 Unreliable Narrators