Mr. White in Reservoir Dogs and Pulp Fiction have some similarities in terms of the overall atmosphere. The gritty, violent, and somewhat surreal feel is common to both. The characters in both are often complex and not simply good or bad. For example, Mr. White has his own code of loyalty in Reservoir Dogs, much like how the characters in Pulp Fiction have their own sets of values that might not be conventional.
The movies share a similar aesthetic and feel. Mr. Brown in Reservoir Dogs exists in a world filled with violence, tension, and dark humor. Pulp Fiction also has these elements. The use of music in both movies is also characteristic of Tarantino's style. For example, in Reservoir Dogs, the music sets the mood for the different scenes, and in Pulp Fiction, it adds to the overall atmosphere of the movie. Mr. Brown's role within his group in Reservoir Dogs can be compared to the relationships between characters in Pulp Fiction, like the relationship between Butch and Marsellus Wallace, which are full of power dynamics and unexpected turns.
There are definite connections. Both films showcase Tarantino's nonlinear storytelling and have elements of crime, violence, and dark humor. Also, the characters in both often have complex and morally ambiguous motivations.