Even as the screenplay (which Clowes adapted) contains much of the source material’s pitch-black humor, it also falls short of realizing its subtle vision of an angry recluse learning to make peace with his surroundings.
Despite [Harrelson's] commitment to a lack of civility, there’s a darker film lying in the cynical heart of Wilson, one that gets squandered by its mawkish aesthetic and lack of interest in exploring these characters beyond their crudeness.
Despite its appealing performers and some tasty comic moments, Wilson overestimates our affection for a grating antihero only mildly warmed by Harrelson's ambling charm.