Nabokov never wrote one likable character in any book. Someone above said Lolita has a "narrator who you're not supposed to sympathize with", but you're not supposed to sympathise with anyone, his is a worldview where people are morally low and sadistic manipulators, or else pathetic rubes being manipulated

The void of the street, revealing nothing of my wife’s departure except a rhinestone button that she had dropped in the mud after preserving it for three unnecessary years in a broken box, may have spared me a bloody nose. But no matter. I had my little revenge in due time. A man from Pasadena told me one day that Mrs. Maximovich née Zborovski had died in childbirth around 1945; the couple had somehow got over to California and had been used there, for an excellent salary, in a year-long experiment conducted by a distinguished American ethnologist. The experiment dealt with human and racial reactions to a diet of bananas and dates in a constant position on all fours. My informant, a doctor, swore he had seen with his own eyes obese Valechka and her colonel, by then gray-haired and also quite corpulent, diligently crawling about the well-swept floors of a brightly lit set of rooms (fruit in one, water in another, mats in a third and so on) in the company of several other hired quadrupeds, selected from indigent and helpless groups. I tried to find the results of these tests in the Review of Anthropology; but they appear not to have been published yet. These scientific products take of course some time to fructuate. I hope they will be illustrated with photographs when they do get printed, although it is not very likely that a prison library will harbor such erudite works.