Villains in movies and other forms of entertainment tend to be rather abhorrent, vicious, and generally odious. This is necessary to get the audience to dislike them and encourage those watching to root for the good guys. Yet, Tarantino takes a different approach for his films, with most of the villains being good-natured and charming individuals who are just as captivating as any of the so-called heroes.
Take Jules from "Pulp Fiction" as a character to understand exactly what this entails. Despite being a hitman for a crime boss, he is polite, affable, and generally seems to be a nice guy, aside from all the murders. Another Samuel L. Jackson's character is the same, with Ordell Robbie in "Jackie Brown" possessing a likable quality. Bill from "Kill Bill" seems like a soft-spoken and almost grandfatherly figure but is, in reality, a remorseless killer, while the SS Colonel Hans Landa is an awful Nazi, yet his portrayal by Christopher Waltz makes him bleakly compelling.